Restored compatibility with PHP 5.6

Merge PR#102 from peterpp
PHP 8.3 error suppression
2024-03-03 19:46:34 +01:00 · 2024-03-03 19:37:24 +01:00 · 2024-03-03 19:25:57 +01:00 · 2024-03-03 19:25:57 +01:00 · 2024-03-03 18:58:10 +01:00 · 2024-01-26 10:25:59 +01:00
85 changed files with 651 additions and 1109 deletions
--- a/.gitmodules
+++ b/.gitmodules
@ -1,9 +1,3 @@
-[submodule "jush"]
-	path = externals/jush
-	url = https://github.com/vrana/jush
-[submodule "JsShrink"]
-	path = externals/JsShrink
-	url = https://github.com/vrana/JsShrink
 [submodule "designs/hydra"]
 	path = designs/hydra
 	url = https://github.com/Niyko/Hydra-Dark-Theme-for-Adminer
--- a/1
+++ b/1
@ -1 +0,0 @@
-Apache-2.0 OR GPL-2.0-only
--- a/LICENSE.Apache-2.0
+++ b/LICENSE.Apache-2.0
@ -1,202 +0,0 @@
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+++ b/LICENSE.GPL-2.0-only
@ -1,339 +0,0 @@
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--- a/adminer/create.inc.php
+++ b/adminer/create.inc.php
@ -22,17 +22,26 @@ if ($TABLE != "") {
 }

 $row = $_POST;
-$row["fields"] = (array) $row["fields"];
-if ($row["auto_increment_col"]) {
+if (isset($row["fields"])) {
+	$row["fields"] = (array) $row["fields"];
+}
+if (isset($row["auto_increment_col"]) && $row["auto_increment_col"]) {
 	$row["fields"][$row["auto_increment_col"]]["auto_increment"] = true;
 }

 if ($_POST) {
-	set_adminer_settings(array("comments" => $_POST["comments"], "defaults" => $_POST["defaults"]));
+	$array = [];
+	if (isset($_POST["comments"])) {
+		$array["comments"] = $_POST["comments"];
+	}
+	if (isset($_POST["defaults"])) {
+		$array["defaults"] = $_POST["defaults"];
+	}
+	set_adminer_settings($array);
 }

 if ($_POST && !process_fields($row["fields"]) && !$error) {
-	if ($_POST["drop"]) {
+	if (isset($_POST["drop"]) && $_POST["drop"]) {
 		queries_redirect(substr(ME, 0, -1), lang('Table has been dropped.'), drop_tables(array($TABLE)));
 	} else {
 		$fields = array();
@ -43,13 +52,16 @@ if ($_POST && !process_fields($row["fields"]) && !$error) {
 		$after = " FIRST";

 		foreach ($row["fields"] as $key => $field) {
-			$foreign_key = $foreign_keys[$field["type"]];
+			$foreign_key = null;
+			if (isset($field["type"]) && isset($foreign_keys[$field["type"]])) {
+				$foreign_key = $foreign_keys[$field["type"]];
+			}
 			$type_field = ($foreign_key !== null ? $referencable_primary[$foreign_key] : $field); //! can collide with user defined type
 			if ($field["field"] != "") {
-				if (!$field["has_default"]) {
+				if (isset($field["has_default"]) === false || !$field["has_default"]) {
 					$field["default"] = null;
 				}
-				if ($key == $row["auto_increment_col"]) {
+				if (isset($row["auto_increment_col"]) && $key == $row["auto_increment_col"]) {
 					$field["auto_increment"] = true;
 				}
 				$process_field = process_field($field, $type_field);
@ -123,7 +135,7 @@ page_header(($TABLE != "" ? lang('Alter table') : lang('Create table')), $error,

 if (!$_POST) {
 	$row = array(
-		"Engine" => $_COOKIE["adminer_engine"],
+		"Engine" => (isset($_COOKIE["adminer_engine"]) ? $_COOKIE["adminer_engine"] : null),
 		"fields" => array(array("field" => "", "type" => (isset($types["int"]) ? "int" : (isset($types["integer"]) ? "integer" : "")), "on_update" => "")),
 		"partition_names" => array(""),
 	);
@ -132,7 +144,7 @@ if (!$_POST) {
 		$row = $table_status;
 		$row["name"] = $TABLE;
 		$row["fields"] = array();
-		if (!$_GET["auto_increment"]) { // don't prefill by original Auto_increment for the sake of performance and not reusing deleted ids
+		if (isset($_GET["auto_increment"]) === false || !$_GET["auto_increment"]) { // don't prefill by original Auto_increment for the sake of performance and not reusing deleted ids
 			$row["Auto_increment"] = "";
 		}
 		foreach ($orig_fields as $field) {
@ -166,7 +178,7 @@ foreach ($engines as $engine) {
 <form action="" method="post" id="form">
 <p>
 <?php if (support("columns") || $TABLE == "") { ?>
-<?php echo lang('Table name'); ?>: <input name="name" data-maxlength="64" value="<?php echo h($row["name"]); ?>" autocapitalize="off">
+<?php echo lang('Table name'); ?>: <input name="name" data-maxlength="64" value="<?php echo h(isset($row["name"]) ? $row["name"] : null); ?>" autocapitalize="off">
 <?php if ($TABLE == "" && !$_POST) { echo script("focus(qs('#form')['name']);"); } ?>
 <?php echo ($engines ? "<select name='Engine'>" . optionlist(array("" => "(" . lang('engine') . ")") + $engines, $row["Engine"]) . "</select>" . on_help("getTarget(event).value", 1) . script("qsl('select').onchange = helpClose;") : ""); ?>
 <?php echo ($collations && !preg_match("~sqlite|mssql~", $jush) ? html_select("Collation", array("" => "(" . lang('collation') . ")") + $collations, $row["Collation"]) : ""); ?>
@ -189,9 +201,9 @@ edit_fields($row["fields"], $collations, "TABLE", $foreign_keys);
 $comments = ($_POST ? $_POST["comments"] : adminer_setting("comments"));
 echo (support("comment")
 	? checkbox("comments", 1, $comments, lang('Comment'), "editingCommentsClick(this, true);", "jsonly")
-		. ' ' . (preg_match('~\n~', $row["Comment"])
+		. ' ' . (preg_match('~\n~', isset($row["Comment"]) ? $row["Comment"] : null)
 			? "<textarea name='Comment' rows='2' cols='20'" . ($comments ? "" : " class='hidden'") . ">" . h($row["Comment"]) . "</textarea>"
-			: '<input name="Comment" value="' . h($row["Comment"]) . '" data-maxlength="' . (min_version(5.5) ? 2048 : 60) . '"' . ($comments ? "" : " class='hidden'") . '>'
+			: '<input name="Comment" value="' . h(isset($row["Comment"]) ? $row["Comment"] : null) . '" data-maxlength="' . (min_version(5.5) ? 2048 : 60) . '"' . ($comments ? "" : " class='hidden'") . '>'
 		)
 	: '')
 ;
--- a/adminer/db.inc.php
+++ b/adminer/db.inc.php
@ -1,5 +1,13 @@
 <?php
-$tables_views = array_merge((array) $_POST["tables"], (array) $_POST["views"]);
+if (isset($_POST["tables"]) && isset($_POST["views"])) {
+	$tables_views = array_merge((array) $_POST["tables"], (array) $_POST["views"]);
+} elseif (isset($_POST["tables"])) {
+	$tables_views = (array)$_POST["tables"];
+} elseif (isset($_POST["views"])) {
+	$tables_views = (array)$_POST["views"];
+} else {
+	$tables_views = [];
+}

 if ($tables_views && !$error && !$_POST["search"]) {
 	$result = true;
@ -44,10 +52,10 @@ if ($tables_views && !$error && !$_POST["search"]) {
 	queries_redirect(substr(ME, 0, -1), $message, $result);
 }

-page_header(($_GET["ns"] == "" ? lang('Database') . ": " . h(DB) : lang('Schema') . ": " . h($_GET["ns"])), $error, true);
+page_header((isset($_GET["ns"]) === false || $_GET["ns"] == "" ? lang('Database') . ": " . h(DB) : lang('Schema') . ": " . h($_GET["ns"])), $error, true);

 if ($adminer->homepage()) {
-	if ($_GET["ns"] !== "") {
+	if (isset($_GET["ns"]) === false || $_GET["ns"] !== "") {
 		echo "<h3 id='tables-views'>" . lang('Tables and views') . "</h3>\n";
 		$tables_list = tables_list();
 		if (!$tables_list) {
@ -56,7 +64,7 @@ if ($adminer->homepage()) {
 			echo "<form action='' method='post'>\n";
 			if (support("table")) {
 				echo "<fieldset><legend>" . lang('Search data in tables') . " <span id='selected2'></span></legend><div>";
-				echo "<input type='search' name='query' value='" . h($_POST["query"]) . "'>";
+				echo "<input type='search' name='query' value='" . h((isset($_POST["query"]) && $_POST["query"] ? $_POST["query"] : "")) . "'>";
 				echo script("qsl('input').onkeydown = partialArg(bodyKeydown, 'search');", "");
 				echo " <input type='submit' name='search' value='" . lang('Search') . "'>\n";
 				if ($adminer->operator_regexp !== null) {
@ -64,7 +72,7 @@ if ($adminer->homepage()) {
 					echo doc_link(array('sql' => 'regexp.html', 'pgsql' => 'functions-matching.html#FUNCTIONS-POSIX-REGEXP')) . "</p>\n";
 				}
 				echo "</div></fieldset>\n";
-				if ($_POST["search"] && $_POST["query"] != "") {
+				if (isset($_POST["search"]) && $_POST["query"] != "") {
 					$_GET["where"][0]["op"] = $adminer->operator_regexp === null || empty($_POST['regexp']) ? "LIKE %%" : $adminer->operator_regexp;
 					search_tables();
 				}
@ -143,7 +151,7 @@ if ($adminer->homepage()) {
 					echo "<p>" . lang('Move to other database') . ": ";
 					echo ($databases ? html_select("target", $databases, $db) : '<input name="target" value="' . h($db) . '" autocapitalize="off">');
 					echo " <input type='submit' name='move' value='" . lang('Move') . "'>";
-					echo (support("copy") ? " <input type='submit' name='copy' value='" . lang('Copy') . "'> " . checkbox("overwrite", 1, $_POST["overwrite"], lang('overwrite')) : "");
+					echo (support("copy") ? " <input type='submit' name='copy' value='" . lang('Copy') . "'> " . checkbox("overwrite", 1, isset($_POST["overwrite"]), lang('overwrite')) : "");
 					echo "\n";
 				}
 				echo "<input type='hidden' name='all' value=''>"; // used by trCheck()
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@ -15,7 +15,11 @@ if (!defined("DRIVER")) {
 			function connect($server = "", $username = "", $password = "", $database = null, $port = null, $socket = null) {
 				global $adminer;
 				mysqli_report(MYSQLI_REPORT_OFF); // stays between requests, not required since PHP 5.3.4
-				list($host, $port) = explode(":", $server, 2); // part after : is used for port or socket
+				if (strpos($server, ':') !== false) {
+					list($host, $port) = explode(":", $server, 2); // part after : is used for port or socket
+				} else {
+					$host = $server;
+				}
 				$ssl = $adminer->connectSsl();
 				if ($ssl) {
 					$this->ssl_set($ssl['key'], $ssl['cert'], $ssl['ca'], '', '');
@ -540,6 +544,11 @@ if (!defined("DRIVER")) {
 		$return = array();
 		foreach (get_rows("SHOW FULL COLUMNS FROM " . table($table)) as $row) {
 			preg_match('~^([^( ]+)(?:\((.+)\))?( unsigned)?( zerofill)?$~', $row["Type"], $match);
+			for ($i = 0; $i < 5; $i++) {
+				if (isset($match[$i]) === false) {
+					$match[$i] = null;
+				}
+			}
 			$return[$row["Field"]] = array(
 				"field" => $row["Field"],
 				"full_type" => $row["Type"],
@ -1092,13 +1101,13 @@ if (!defined("DRIVER")) {
 	* @return string
 	*/
 	function unconvert_field($field, $return) {
-		if (preg_match("~binary~", $field["type"] ?? null)) {
+		if (preg_match("~binary~", isset($field["type"]) ? $field["type"] : null)) {
 			$return = "UNHEX($return)";
 		}
 		if (isset($field["type"]) && $field["type"] == "bit") {
 			$return = "CONV($return, 2, 10) + 0";
 		}
-		if (preg_match("~geometry|point|linestring|polygon~", $field["type"] ?? null)) {
+		if (preg_match("~geometry|point|linestring|polygon~", isset($field["type"]) ? $field["type"] : null)) {
 			$prefix = (min_version(8) ? "ST_" : "");
 			$return = $prefix . "GeomFromText($return, $prefix" . "SRID($field[field]))";
 		}
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@ -234,7 +234,10 @@ if (isset($_GET["pgsql"])) {
 				"information_schema" => "infoschema",
 				"pg_catalog" => "catalog",
 			);
-			$link = $links[$_GET["ns"]];
+			$link = null;
+			if (isset($_GET["ns"]) && isset($links[$_GET["ns"]])) {
+				$links[$_GET["ns"]];
+			}
 			if ($link) {
 				return "$link-" . str_replace("_", "-", $name) . ".html";
 			}
@ -467,7 +470,7 @@ ORDER BY connamespace, conname") as $row) {
 		global $connection;
 		$return = h($connection->error);
 		if (preg_match('~^(.*\n)?([^\n]*)\n( *)\^(\n.*)?$~s', $return, $match)) {
-			$return = $match[1] . preg_replace('~((?:[^&]|&[^;]*;){' . strlen($match[3]) . '})(.*)~', '\1<b>\2</b>', $match[2]) . $match[4];
+			$return = $match[1] . preg_replace('~((?:[^&]|&[^;]*;){' . strlen($match[3]) . '})(.*)~', '\1<b>\2</b>', $match[2]) . (isset($match[4]) ? $match[4] : null);
 		}
 		return nl_br($return);
 	}
--- a/adminer/edit.inc.php
+++ b/adminer/edit.inc.php
@ -2,7 +2,7 @@
 $TABLE = $_GET["edit"];
 $fields = fields($TABLE);
 $where = (isset($_GET["select"]) ? ($_POST["check"] && count($_POST["check"]) == 1 ? where_check($_POST["check"][0], $fields) : "") : where($_GET, $fields));
-$update = (isset($_GET["select"]) ? $_POST["edit"] : $where);
+$update = (isset($_GET["select"]) ? (isset($_POST["edit"]) ? $_POST["edit"] : null) : $where);
 foreach ($fields as $name => $field) {
 	if (!isset($field["privileges"][$update ? "update" : "insert"]) || $adminer->fieldName($field) == "" || $field["generated"]) {
 		unset($fields[$name]);
@ -11,14 +11,14 @@ foreach ($fields as $name => $field) {

 if ($_POST && !$error && !isset($_GET["select"])) {
 	$location = $_POST["referer"];
-	if ($_POST["insert"]) { // continue edit or insert
+	if (isset($_POST["insert"]) && $_POST["insert"]) { // continue edit or insert
 		$location = ($update ? null : $_SERVER["REQUEST_URI"]);
 	} elseif (!preg_match('~^.+&select=.+$~', $location)) {
 		$location = ME . "select=" . urlencode($TABLE);
 	}

 	$indexes = indexes($TABLE);
-	$unique_array = unique_array($_GET["where"], $indexes);
+	$unique_array = unique_array((isset($_GET["where"]) ? $_GET["where"] : []), $indexes);
 	$query_where = "\nWHERE $where";

 	if (isset($_POST["delete"])) {
@ -60,14 +60,14 @@ if ($_POST && !$error && !isset($_GET["select"])) {
 }

 $row = null;
-if ($_POST["save"]) {
+if (isset($_POST["save"]) &&$_POST["save"]) {
 	$row = (array) $_POST["fields"];
 } elseif ($where) {
 	$select = array();
 	foreach ($fields as $name => $field) {
 		if (isset($field["privileges"]["select"])) {
 			$as = convert_field($field);
-			if ($_POST["clone"] && $field["auto_increment"]) {
+			if (isset($_POST["clone"]) && $_POST["clone"] && isset($field["auto_increment"]) && $field["auto_increment"]) {
 				$as = "''";
 			}
 			if ($jush == "sql" && preg_match("~enum|set~", $field["type"])) {
--- a/adminer/file.inc.php
+++ b/adminer/file.inc.php
@ -6,13 +6,13 @@ if ($_GET["file"] == "favicon.ico") {
 	echo lzw_decompress(compile_file('../adminer/static/favicon.ico', 'lzw_compress'));
 } elseif ($_GET["file"] == "default.css") {
 	header("Content-Type: text/css; charset=utf-8");
-	echo lzw_decompress(compile_file('../adminer/static/default.css;../externals/jush/jush.css', 'minify_css'));
+	echo lzw_decompress(compile_file('../adminer/static/default.css;../vendor/vrana/jush/jush.css', 'minify_css'));
 } elseif ($_GET["file"] == "functions.js") {
 	header("Content-Type: text/javascript; charset=utf-8");
 	echo lzw_decompress(compile_file('../adminer/static/functions.js;static/editing.js', 'minify_js'));
 } elseif ($_GET["file"] == "jush.js") {
 	header("Content-Type: text/javascript; charset=utf-8");
-	echo lzw_decompress(compile_file('../externals/jush/modules/jush.js;../externals/jush/modules/jush-textarea.js;../externals/jush/modules/jush-txt.js;../externals/jush/modules/jush-js.js;../externals/jush/modules/jush-sql.js;../externals/jush/modules/jush-pgsql.js;../externals/jush/modules/jush-sqlite.js;../externals/jush/modules/jush-mssql.js;../externals/jush/modules/jush-oracle.js;../externals/jush/modules/jush-simpledb.js', 'minify_js'));
+	echo lzw_decompress(compile_file('../vendor/vrana/jush/modules/jush.js;../vendor/vrana/jush/modules/jush-textarea.js;../vendor/vrana/jush/modules/jush-txt.js;../vendor/vrana/jush/modules/jush-js.js;../vendor/vrana/jush/modules/jush-sql.js;../vendor/vrana/jush/modules/jush-pgsql.js;../vendor/vrana/jush/modules/jush-sqlite.js;../vendor/vrana/jush/modules/jush-mssql.js;../vendor/vrana/jush/modules/jush-oracle.js;../vendor/vrana/jush/modules/jush-simpledb.js', 'minify_js'));
 } else {
 	header("Content-Type: image/gif");
 	switch ($_GET["file"]) {
--- a/adminer/foreign.inc.php
+++ b/adminer/foreign.inc.php
@ -84,7 +84,7 @@ $j = 0;
 foreach ($row["source"] as $key => $val) {
 	echo "<tr>";
 	echo "<td>" . html_select("source[" . (+$key) . "]", array(-1 => "") + $source, $val, ($j == count($row["source"]) - 1 ? "foreignAddRow.call(this);" : 1), "label-source");
-	echo "<td>" . html_select("target[" . (+$key) . "]", $target, isset($row["target"][$key]) ? $row["target"][$key] : null, 1, "label-target");
+	echo "<td>" . html_select("target[" . (+$key) . "]", $target, $row["target"][$key], 1, "label-target");
 	$j++;
 }
 ?>
--- a/adminer/include/adminer.inc.php
+++ b/adminer/include/adminer.inc.php
@ -121,12 +121,12 @@ class Adminer {
 		echo "<table cellspacing='0' class='layout'>\n";
 		echo $this->loginFormField('driver', '<tr><th>' . lang('System') . '<td>', html_select("auth[driver]", $drivers, DRIVER, "loginDriver(this);") . "\n");
 		echo $this->loginFormField('server', '<tr><th>' . lang('Server') . '<td>', '<input name="auth[server]" value="' . h(SERVER) . '" title="hostname[:port]" placeholder="localhost" autocapitalize="off">' . "\n");
-		echo $this->loginFormField('username', '<tr><th>' . lang('Username') . '<td>', '<input name="auth[username]" id="username" value="' . h($_GET["username"]) . '" autocomplete="username" autocapitalize="off">' . script("focus(qs('#username')); qs('#username').form['auth[driver]'].onchange();"));
+		echo $this->loginFormField('username', '<tr><th>' . lang('Username') . '<td>', '<input name="auth[username]" id="username" value="' . h((isset($_GET["username"]) ? $_GET["username"] : "")) . '" autocomplete="username" autocapitalize="off">' . script("focus(qs('#username')); qs('#username').form['auth[driver]'].onchange();"));
 		echo $this->loginFormField('password', '<tr><th>' . lang('Password') . '<td>', '<input type="password" name="auth[password]" autocomplete="current-password">' . "\n");
-		echo $this->loginFormField('db', '<tr><th>' . lang('Database') . '<td>', '<input name="auth[db]" value="' . h($_GET["db"]) . '" autocapitalize="off">' . "\n");
+		echo $this->loginFormField('db', '<tr><th>' . lang('Database') . '<td>', '<input name="auth[db]" value="' . h((isset($_GET["db"]) ? $_GET["db"] : "")) . '" autocapitalize="off">' . "\n");
 		echo "</table>\n";
 		echo "<p><input type='submit' value='" . lang('Login') . "'>\n";
-		echo checkbox("auth[permanent]", 1, $_COOKIE["adminer_permanent"], lang('Permanent login')) . "\n";
+		echo checkbox("auth[permanent]", 1, isset($_COOKIE["adminer_permanent"]) ? $_COOKIE["adminer_permanent"] : null, lang('Permanent login')) . "\n";
 	}

 	/** Get login form field
@ -318,7 +318,7 @@ class Adminer {
 		echo "<thead><tr><th>" . lang('Column') . "<td>" . lang('Type') . (support("comment") ? "<td>" . lang('Comment') : "") . "</thead>\n";
 		foreach ($fields as $field) {
 			echo "<tr" . odd() . "><th>" . h($field["field"]);
-			echo "<td><span title='" . h($field["collation"]) . "'>" . h($field["full_type"]) . "</span>";
+			echo "<td><span title='" . h(isset($field["collation"]) ? $field["collation"] : null) . "'>" . h(isset($field["full_type"]) ? $field["full_type"] : null) . "</span>";
 			echo ($field["null"] ? " <i>NULL</i>" : "");
 			echo ($field["auto_increment"] ? " <i>" . lang('Auto Increment') . "</i>" : "");
 			echo (isset($field["default"]) ? " <span title='" . lang('Default value') . "'>[<b>" . h($field["default"]) . "</b>]</span>" : "");
@ -340,8 +340,8 @@ class Adminer {
 			$print = array();
 			foreach ($index["columns"] as $key => $val) {
 				$print[] = "<i>" . h($val) . "</i>"
-					. ($index["lengths"][$key] ? "(" . $index["lengths"][$key] . ")" : "")
-					. ($index["descs"][$key] ? " DESC" : "")
+					. (isset($index["lengths"][$key]) && $index["lengths"][$key] ? "(" . $index["lengths"][$key] . ")" : "")
+					. (isset($index["descs"][$key]) && $index["descs"][$key] ? " DESC" : "")
 				;
 			}
 			echo "<tr title='" . h($name) . "'><th>$index[type]<td>" . implode(", ", $print) . "\n";
@ -398,21 +398,23 @@ class Adminer {
 			}
 		}
 		$change_next = "this.parentNode.firstChild.onchange();";
-		foreach (array_merge((array) $_GET["where"], array(array())) as $i => $val) {
-			if (!$val || ("$val[col]$val[val]" != "" && in_array($val["op"], $this->operators))) {
-				echo "<div>" . select_input(
-					" name='where[$i][col]'",
-					$columns,
-					$val["col"],
-					($val ? "selectFieldChange" : "selectAddRow"),
-					"(" . lang('anywhere') . ")"
-				);
-				echo html_select("where[$i][op]", $this->operators, $val["op"], $change_next);
-				echo "<input type='search' name='where[$i][val]' value='" . h($val["val"]) . "'>";
-				echo script("mixin(qsl('input'), {oninput: function () { $change_next }, onkeydown: selectSearchKeydown, onsearch: selectSearchSearch});", "");
-				echo "<input type='image' src='../adminer/static/cross.gif' class='jsonly icon' title='", h(lang('Remove')), "' alt='x'>";
-				echo script('qsl(".icon").onclick = selectRemoveRow;', "");
-				echo "</div>\n";
+		if (isset($_GET["where"])) {
+			foreach (array_merge((array) $_GET["where"], array(array())) as $i => $val) {
+				if (!$val || ("$val[col]$val[val]" != "" && in_array($val["op"], $this->operators))) {
+					echo "<div>" . select_input(
+						" name='where[$i][col]'",
+						$columns,
+						$val["col"],
+						($val ? "selectFieldChange" : "selectAddRow"),
+						"(" . lang('anywhere') . ")"
+					);
+					echo html_select("where[$i][op]", $this->operators, $val["op"], $change_next);
+					echo "<input type='search' name='where[$i][val]' value='" . h($val["val"]) . "'>";
+					echo script("mixin(qsl('input'), {oninput: function () { $change_next }, onkeydown: selectSearchKeydown, onsearch: selectSearchSearch});", "");
+					echo "<input type='image' src='../adminer/static/cross.gif' class='jsonly icon' title='", h(lang('Remove')), "' alt='x'>";
+					echo script('qsl(".icon").onclick = selectRemoveRow;', "");
+					echo "</div>\n";
+				}
 			}
 		}
 		echo "</div></fieldset>\n";
@ -427,14 +429,16 @@ class Adminer {
 	function selectOrderPrint($order, $columns, $indexes) {
 		print_fieldset("sort", lang('Sort'), $order);
 		$i = 0;
-		foreach ((array) $_GET["order"] as $key => $val) {
-			if ($val != "") {
-				echo "<div>" . select_input(" name='order[$i]'", $columns, $val, "selectFieldChange");
-				echo checkbox("desc[$i]", 1, isset($_GET["desc"][$key]), lang('descending'));
-				echo " <input type='image' src='../adminer/static/cross.gif' class='jsonly icon' title='", h(lang('Remove')), "' alt='x'>";
-				echo script('qsl(".icon").onclick = selectRemoveRow;', "");
-				echo "</div>\n";
-				$i++;
+		if (isset($_GET["order"])) {
+			foreach ((array) $_GET["order"] as $key => $val) {
+				if ($val != "") {
+					echo "<div>" . select_input(" name='order[$i]'", $columns, $val, "selectFieldChange");
+					echo checkbox("desc[$i]", 1, isset($_GET["desc"][$key]), lang('descending'));
+					echo " <input type='image' src='../adminer/static/cross.gif' class='jsonly icon' title='", h(lang('Remove')), "' alt='x'>";
+					echo script('qsl(".icon").onclick = selectRemoveRow;', "");
+					echo "</div>\n";
+					$i++;
+				}
 			}
 		}
 		echo "<div>" . select_input(" name='order[$i]'", $columns, "", "selectAddRow");
@ -526,11 +530,13 @@ class Adminer {
 		global $functions, $grouping;
 		$select = array(); // select expressions, empty for *
 		$group = array(); // expressions without aggregation - will be used for GROUP BY if an aggregation function is used
-		foreach ((array) $_GET["columns"] as $key => $val) {
-			if ($val["fun"] == "count" || ($val["col"] != "" && (!$val["fun"] || in_array($val["fun"], $functions) || in_array($val["fun"], $grouping)))) {
-				$select[$key] = apply_sql_function($val["fun"], ($val["col"] != "" ? idf_escape($val["col"]) : "*"));
-				if (!in_array($val["fun"], $grouping)) {
-					$group[] = $select[$key];
+		if (isset($_GET["columns"])) {
+			foreach ((array) $_GET["columns"] as $key => $val) {
+				if ($val["fun"] == "count" || ($val["col"] != "" && (!$val["fun"] || in_array($val["fun"], $functions) || in_array($val["fun"], $grouping)))) {
+					$select[$key] = apply_sql_function($val["fun"], ($val["col"] != "" ? idf_escape($val["col"]) : "*"));
+					if (!in_array($val["fun"], $grouping)) {
+						$group[] = $select[$key];
+					}
 				}
 			}
 		}
@ -550,39 +556,41 @@ class Adminer {
 				$return[] = "MATCH (" . implode(", ", array_map('idf_escape', $index["columns"])) . ") AGAINST (" . q($_GET["fulltext"][$i]) . (isset($_GET["boolean"][$i]) ? " IN BOOLEAN MODE" : "") . ")";
 			}
 		}
-		foreach ((array) $_GET["where"] as $key => $val) {
-			if ("$val[col]$val[val]" != "" && in_array($val["op"], $this->operators)) {
-				$prefix = "";
-				$cond = " $val[op]";
-				if (preg_match('~IN$~', $val["op"])) {
-					$in = process_length($val["val"]);
-					$cond .= " " . ($in != "" ? $in : "(NULL)");
-				} elseif ($val["op"] == "SQL") {
-					$cond = " $val[val]"; // SQL injection
-				} elseif ($val["op"] == "LIKE %%") {
-					$cond = " LIKE " . $this->processInput($fields[$val["col"]], "%$val[val]%");
-				} elseif ($val["op"] == "ILIKE %%") {
-					$cond = " ILIKE " . $this->processInput($fields[$val["col"]], "%$val[val]%");
-				} elseif ($val["op"] == "FIND_IN_SET") {
-					$prefix = "$val[op](" . q($val["val"]) . ", ";
-					$cond = ")";
-				} elseif (!preg_match('~NULL$~', $val["op"])) {
-					$cond .= " " . $this->processInput($fields[$val["col"]], $val["val"]);
-				}
-				if ($val["col"] != "") {
-					$return[] = $prefix . $driver->convertSearch(idf_escape($val["col"]), $val, $fields[$val["col"]]) . $cond;
-				} else {
-					// find anywhere
-					$cols = array();
-					foreach ($fields as $name => $field) {
-						if ((preg_match('~^[-\d.' . (preg_match('~IN$~', $val["op"]) ? ',' : '') . ']+$~', $val["val"]) || !preg_match('~' . number_type() . '|bit~', $field["type"]))
-							&& (!preg_match("~[\x80-\xFF]~", $val["val"]) || preg_match('~char|text|enum|set~', $field["type"]))
-							&& (!preg_match('~date|timestamp~', $field["type"]) || preg_match('~^\d+-\d+-\d+~', $val["val"]))
-						) {
-							$cols[] = $prefix . $driver->convertSearch(idf_escape($name), $val, $field) . $cond;
-						}
+		if (isset($_GET["where"])) {
+			foreach ((array) $_GET["where"] as $key => $val) {
+				if ("$val[col]$val[val]" != "" && in_array($val["op"], $this->operators)) {
+					$prefix = "";
+					$cond = " $val[op]";
+					if (preg_match('~IN$~', $val["op"])) {
+						$in = process_length($val["val"]);
+						$cond .= " " . ($in != "" ? $in : "(NULL)");
+					} elseif ($val["op"] == "SQL") {
+						$cond = " $val[val]"; // SQL injection
+					} elseif ($val["op"] == "LIKE %%") {
+						$cond = " LIKE " . $this->processInput($fields[$val["col"]], "%$val[val]%");
+					} elseif ($val["op"] == "ILIKE %%") {
+						$cond = " ILIKE " . $this->processInput($fields[$val["col"]], "%$val[val]%");
+					} elseif ($val["op"] == "FIND_IN_SET") {
+						$prefix = "$val[op](" . q($val["val"]) . ", ";
+						$cond = ")";
+					} elseif (!preg_match('~NULL$~', $val["op"])) {
+						$cond .= " " . $this->processInput($fields[$val["col"]], $val["val"]);
+					}
+					if ($val["col"] != "") {
+						$return[] = $prefix . $driver->convertSearch(idf_escape($val["col"]), $val, $fields[$val["col"]]) . $cond;
+					} else {
+						// find anywhere
+						$cols = array();
+						foreach ($fields as $name => $field) {
+							if ((preg_match('~^[-\d.' . (preg_match('~IN$~', $val["op"]) ? ',' : '') . ']+$~', $val["val"]) || !preg_match('~' . number_type() . '|bit~', $field["type"]))
+								&& (!preg_match("~[\x80-\xFF]~", $val["val"]) || preg_match('~char|text|enum|set~', $field["type"]))
+								&& (!preg_match('~date|timestamp~', $field["type"]) || preg_match('~^\d+-\d+-\d+~', $val["val"]))
+							) {
+								$cols[] = $prefix . $driver->convertSearch(idf_escape($name), $val, $field) . $cond;
+							}
+						}
+						$return[] = ($cols ? "(" . implode(" OR ", $cols) . ")" : "1 = 0");
 					}
-					$return[] = ($cols ? "(" . implode(" OR ", $cols) . ")" : "1 = 0");
 				}
 			}
 		}
@ -596,11 +604,13 @@ class Adminer {
 	*/
 	function selectOrderProcess($fields, $indexes) {
 		$return = array();
-		foreach ((array) $_GET["order"] as $key => $val) {
-			if ($val != "") {
-				$return[] = (preg_match('~^((COUNT\(DISTINCT |[A-Z0-9_]+\()(`(?:[^`]|``)+`|"(?:[^"]|"")+")\)|COUNT\(\*\))$~', $val) ? $val : idf_escape($val)) //! MS SQL uses []
-					. (isset($_GET["desc"][$key]) ? " DESC" : "")
-				;
+		if (isset($_GET["order"])) {
+			foreach ((array) $_GET["order"] as $key => $val) {
+				if ($val != "") {
+					$return[] = (preg_match('~^((COUNT\(DISTINCT |[A-Z0-9_]+\()(`(?:[^`]|``)+`|"(?:[^"]|"")+")\)|COUNT\(\*\))$~', $val) ? $val : idf_escape($val)) //! MS SQL uses []
+						. (isset($_GET["desc"][$key]) ? " DESC" : "")
+					;
+				}
 			}
 		}
 		return $return;
@ -723,30 +733,10 @@ class Adminer {
 	*/
 	function editInput($table, $field, $attrs, $value) {
 		if ($field["type"] == "enum") {
-			$options = array();
-			$selected = $value;
-			if (isset($_GET["select"])) {
-				$options[-1] = lang('original');
-				if ($selected === null) {
-					$selected = -1;
-				}
-			}
-			if ($field["null"]) {
-				$options[""] = "NULL";
-				if ($value === null && !isset($_GET["select"])) {
-					$selected = "";
-				}
-			}
-			$options[0] = lang('empty');
-			preg_match_all("~'((?:[^']|'')*)'~", $field["length"], $matches);
-			foreach ($matches[1] as $i => $val) {
-				$val = stripcslashes(str_replace("''", "'", $val));
-				$options[$i + 1] = $val;
-				if ($value === $val) {
-					$selected = $i + 1;
-				}
-			}
-			return "<select$attrs>" . optionlist($options, (string) $selected, 1) . "</select>"; // 1 - use keys
+			return (isset($_GET["select"]) ? "<label><input type='radio'$attrs value='-1' checked><i>" . lang('original') . "</i></label> " : "")
+				. ($field["null"] ? "<label><input type='radio'$attrs value=''" . ($value !== null || isset($_GET["select"]) ? "" : " checked") . "><i>NULL</i></label> " : "")
+				. enum_input("radio", $attrs, $field, $value, 0) // 0 - empty
+			;
 		}
 		return "";
 	}
@ -870,7 +860,6 @@ class Adminer {
 				$insert = "";
 				$buffer = "";
 				$keys = array();
-				$generatedKeys = array();
 				$suffix = "";
 				$fetch_function = ($table != '' ? 'fetch_assoc' : 'fetch_row');
 				while ($row = $result->$fetch_function()) {
@ -878,10 +867,6 @@ class Adminer {
 						$values = array();
 						foreach ($row as $val) {
 							$field = $result->fetch_field();
-							if (!empty($fields[$field->name]['generated'])) {
-								$generatedKeys[$field->name] = true;
-								continue;
-							}
 							$keys[] = $field->name;
 							$key = idf_escape($field->name);
 							$values[] = "$key = VALUES($key)";
@ -899,10 +884,6 @@ class Adminer {
 							$insert = "INSERT INTO " . table($table) . " (" . implode(", ", array_map('idf_escape', $keys)) . ") VALUES";
 						}
 						foreach ($row as $key => $val) {
-							if (isset($generatedKeys[$key])) {
-								unset($row[$key]);
-								continue;
-							}
 							$field = $fields[$key];
 							$row[$key] = ($val !== null
 								? unconvert_field($field, preg_match(number_type(), $field["type"]) && !preg_match('~\[~', $field["full_type"]) && is_numeric($val) ? $val : q(($val === false ? 0 : $val)))
@ -968,13 +949,13 @@ class Adminer {
 	*/
 	function homepage() {
 		$links = [];
-		if ($_GET["ns"] == "" && support("database")) {
+		if (isset($_GET["ns"]) && $_GET["ns"] == "" && support("database")) {
 			$links[] = '<a href="' . h(ME) . 'database=">' . lang('Alter database') . '</a>';
 		}
 		if (support("scheme")) {
 			$links[] = "<a href='" . h(ME) . "scheme='>" . ($_GET["ns"] != "" ? lang('Alter schema') : lang('Create schema')) . "</a>";
 		}
-		if ($_GET["ns"] !== "") {
+		if (isset($_GET["ns"]) && $_GET["ns"] !== "") {
 			$links[] = '<a href="' . h(ME) . 'schema=">' . lang('Database schema') . '</a>';
 		}
 		if (support("privileges")) {
@ -993,18 +974,19 @@ class Adminer {
 		?>
 <h1>
 <?php echo $this->name(); ?> <span class="version"><?php echo $VERSION; ?></span>
-<a href="https://download.adminerevo.org/latest/adminer/"<?php echo target_blank(); ?> id="version" title="<?php echo lang('A newer version of AdminerEvo is available, download it now!'); ?>"><?php echo (version_compare($VERSION, $_COOKIE["adminer_version"]) < 0 ? h($_COOKIE["adminer_version"]) : ""); ?></a>
 </h1>
 <?php
 		if ($missing == "auth") {
 			$output = "";
-			foreach ((array) $_SESSION["pwds"] as $vendor => $servers) {
-				foreach ($servers as $server => $usernames) {
-					foreach ($usernames as $username => $password) {
-						if ($password !== null) {
-							$dbs = $_SESSION["db"][$vendor][$server][$username];
-							foreach (($dbs ? array_keys($dbs) : array("")) as $db) {
-								$output .= "<li><a href='" . h(auth_url($vendor, $server, $username, $db)) . "'>($drivers[$vendor]) " . h($username . ($server != "" ? "@" . $this->serverName($server) : "") . ($db != "" ? " - $db" : "")) . "</a>\n";
+			if (isset( $_SESSION["pwds"])) {
+				foreach ((array) $_SESSION["pwds"] as $vendor => $servers) {
+					foreach ($servers as $server => $usernames) {
+						foreach ($usernames as $username => $password) {
+							if ($password !== null) {
+								$dbs = $_SESSION["db"][$vendor][$server][$username];
+								foreach (($dbs ? array_keys($dbs) : array("")) as $db) {
+									$output .= "<li><a href='" . h(auth_url($vendor, $server, $username, $db)) . "'>($drivers[$vendor]) " . h($username . ($server != "" ? "@" . $this->serverName($server) : "") . ($db != "" ? " - $db" : "")) . "</a>\n";
+								}
 							}
 						}
 					}
@ -1015,7 +997,7 @@ class Adminer {
 			}
 		} else {
 			$tables = array();
-			if ($_GET["ns"] !== "" && !$missing && DB != "") {
+			if (isset($_GET["ns"]) === false || $_GET["ns"] !== "" && !$missing && DB != "") {
 				$connection->select_db(DB);
 				$tables = table_status('', true);
 			}
@ -1052,13 +1034,13 @@ bodyLoad('<?php echo (is_object($connection) ? preg_replace('~^(\d\.?\d).*~s', '
 					$links[] = "<a href='" . h(ME) . "import='" . bold(isset($_GET["import"])) . ">" . lang('Import') . "</a>";
 				}
 				if (support("dump")) {
-					$links[] = "<a href='" . h(ME) . "dump=" . urlencode(isset($_GET["table"]) ? $_GET["table"] : $_GET["select"]) . "' id='dump'" . bold(isset($_GET["dump"])) . ">" . lang('Export') . "</a>";
+					$links[] = "<a href='" . h(ME) . "dump=" . urlencode(isset($_GET["table"]) ? $_GET["table"] : (isset($_GET["select"]) && $_GET["select"] ? $_GET["select"] : "" )) . "' id='dump'" . bold(isset($_GET["dump"])) . ">" . lang('Export') . "</a>";
 				}
 			}
 			echo generate_linksbar($links);

-			if ($_GET["ns"] !== "" && !$missing && DB != "") {
-				echo generate_linksbar(['<a href="' . h(ME) . 'create="' . bold($_GET["create"] === "") . ">" . lang('Create table') . "</a>"]);
+			if (isset($_GET["ns"]) === false || $_GET["ns"] !== "" && !$missing && DB != "") {
+				echo generate_linksbar(['<a href="' . h(ME) . 'create="' . bold(isset($_GET["create"]) && $_GET["create"] === "") . ">" . lang('Create table') . "</a>"]);
 				if (!$tables) {
 					echo "<p class='message'>" . lang('No tables.') . "\n";
 				} else {
@ -1118,13 +1100,20 @@ bodyLoad('<?php echo (is_object($connection) ? preg_replace('~^(\d\.?\d).*~s', '
 		foreach ($tables as $table => $status) {
 			$name = $this->tableName($status);
 			if ($name != "") {
+				$array = [];
+				if (isset($_GET["table"])) $array[] = $_GET["table"];
+				if (isset($_GET["create"])) $array[] = $_GET["create"];
+				if (isset($_GET["indexes"])) $array[] = $_GET["indexes"];
+				if (isset($_GET["foreign"])) $array[] = $_GET["foreign"];
+				if (isset($_GET["trigger"])) $array[] = $_GET["trigger"];
+				if (isset($_GET["select"])) $array[] = $_GET["select"];
 				echo '<li><a href="' . h(ME) . 'select=' . urlencode($table) . '"'
-					. bold($_GET["select"] == $table || $_GET["edit"] == $table, "select")
+					. bold(isset($_GET["select"]) && $_GET["select"] == $table || isset($_GET["edit"]) && $_GET["edit"] == $table, "select")
 					. " title='" . lang('Select data') . "'>" . lang('select') . "</a> "
 				;
 				echo (support("table") || support("indexes")
 					? '<a href="' . h(ME) . 'table=' . urlencode($table) . '"'
-						. bold(in_array($table, array($_GET["table"], $_GET["create"], $_GET["indexes"], $_GET["foreign"], $_GET["trigger"], $_GET["select"])), (is_view($status) ? "view" : "structure"))
+						. bold(in_array($table, $array), (is_view($status) ? "view" : "structure"))
 						. " title='" . lang('Show structure') . "'>$name</a>"
 					: "<span>$name</span>"
 				) . "\n";
--- a/adminer/include/auth.inc.php
+++ b/adminer/include/auth.inc.php
@ -1,14 +1,14 @@
 <?php
 $connection = '';

-$has_token = $_SESSION["token"];
+$has_token = isset($_SESSION["token"]) && $_SESSION["token"];
 if (!$has_token) {
 	$_SESSION["token"] = rand(1, 1e6); // defense against cross-site request forgery
 }
 $token = get_token(); ///< @var string CSRF protection

 $permanent = array();
-if ($_COOKIE["adminer_permanent"]) {
+if (isset($_COOKIE["adminer_permanent"]) && $_COOKIE["adminer_permanent"]) {
 	foreach (explode(" ", $_COOKIE["adminer_permanent"]) as $val) {
 		list($key) = explode(":", $val);
 		$permanent[$key] = $val;
@ -92,25 +92,30 @@ function add_invalid_login() {

 function check_invalid_login() {
 	global $adminer;
-	$invalids = unserialize(@file_get_contents(get_temp_dir() . "/adminer.invalid")); // @ - may not exist
+	$filename = get_temp_dir() . "/adminer.invalid";
+	if (file_exists($filename)) {
+		$invalids = unserialize(file_get_contents(get_temp_dir() . "/adminer.invalid"));
+	} else {
+		$invalids = [];
+	}
 	$invalid = ($invalids ? $invalids[$adminer->bruteForceKey()] : array());
 	if ($invalid === null) {
 		return;
 	}
-	$next_attempt = ($invalid[1] > 29 ? $invalid[0] - time() : 0); // allow 30 invalid attempts
+	$next_attempt = (isset($invalid[1]) && $invalid[1] > 29 ? $invalid[0] - time() : 0); // allow 30 invalid attempts
 	if ($next_attempt > 0) { //! do the same with permanent login
 		auth_error(lang('Too many unsuccessful logins, try again in %d minute(s).', ceil($next_attempt / 60)));
 	}
 }

-$auth = $_POST["auth"];
+$auth = (isset($_POST["auth"]) ? $_POST["auth"] : null);
 if ($auth) {
 	session_regenerate_id(); // defense against session fixation
-	$vendor = $auth["driver"];
-	$server = trim($auth["server"]);
-	$username = $auth["username"];
-	$password = (string) $auth["password"];
-	$db = $auth["db"];
+	$vendor = isset($auth["driver"]) ? $auth["driver"] : null;
+	$server = isset($auth["server"]) ? trim($auth["server"]) : null;
+	$username = isset($auth["username"]) ? $auth["username"] : null;
+	$password = isset($auth["password"]) ? (string) $auth["password"] : null;
+	$db = isset($auth["db"]) ? $auth["db"] : null;
 	set_password($vendor, $server, $username, $password);
 	$_SESSION["db"][$vendor][$server][$username][$db] = true;
 	if ($auth["permanent"]) {
@ -128,7 +133,7 @@ if ($auth) {
 		redirect(auth_url($vendor, $server, $username, $db));
 	}

-} elseif ($_POST["logout"] && (!$has_token || verify_token())) {
+} elseif (isset($_POST["logout"]) && $_POST["logout"] && (!$has_token || verify_token())) {
 	foreach (array("pwds", "db", "dbs", "queries") as $key) {
 		set_session($key, null);
 	}
@ -166,7 +171,7 @@ function auth_error($error) {
 	$session_name = session_name();
 	if (isset($_GET["username"])) {
 		header("HTTP/1.1 403 Forbidden"); // 401 requires sending WWW-Authenticate header
-		if (($_COOKIE[$session_name] || $_GET[$session_name]) && !$has_token) {
+		if (((isset($_COOKIE[$session_name]) && $_COOKIE[$session_name]) || (isset($_GET[$session_name]) && $_GET[$session_name])) && !$has_token) {
 			$error = lang('Session expired, please login again.');
 		} else {
 			restart_session();
@ -181,7 +186,7 @@ function auth_error($error) {
 			unset_permanent();
 		}
 	}
-	if (!$_COOKIE[$session_name] && $_GET[$session_name] && ini_bool("session.use_only_cookies")) {
+	if ((isset($_COOKIE[$session_name]) === false || !$_COOKIE[$session_name]) && (isset($_GET[$session_name]) && $_GET[$session_name]) && ini_bool("session.use_only_cookies")) {
 		$error = lang('Session support must be enabled.');
 	}
 	$params = session_get_cookie_params();
@ -223,7 +228,7 @@ if (!is_object($connection) || ($login = $adminer->login($_GET["username"], get_
 	auth_error($error . (preg_match('~^ | $~', get_password()) ? '<br>' . lang('There is a space in the input password which might be the cause.') : ''));
 }

-if ($_POST["logout"] && $has_token && !verify_token()) {
+if (isset($_POST["logout"]) && $_POST["logout"] && $has_token && !verify_token()) {
 	page_header(lang('Logout'), lang('Invalid CSRF token. Send the form again.'));
 	page_footer("db");
 	exit;
--- a/adminer/include/bootstrap.inc.php
+++ b/adminer/include/bootstrap.inc.php
@ -1,6 +1,7 @@
 <?php
-function adminer_errors($errno, $errstr) {
-	return !!preg_match('~^(Trying to access array offset on( value of type)? null|Undefined array key)~', $errstr);
+function adminer_errors($errNo, $errStr, $errFile, $errLine) {
+	file_put_contents("php://stderr", sprintf("%d - %s - %s:%d\n", $errNo, $errStr, $errFile, $errLine));
+	printf("%d - %s - %s:%d\n", $errNo, $errStr, $errFile, $errLine);
 }

 error_reporting(6135); // errors and warnings
@ -30,10 +31,10 @@ if (isset($_GET["file"])) {
 	include "../adminer/file.inc.php";
 }

-if ($_GET["script"] == "version") {
+if (isset($_GET["script"]) && $_GET["script"] == "version") {
 	$fp = file_open_lock(get_temp_dir() . "/adminer.version");
 	if ($fp) {
-		file_write_unlock($fp, serialize(array("version" => $_POST["version"])));
+		file_write_unlock($fp, serialize(array("signature" => $_POST["signature"], "version" => $_POST["version"])));
 	}
 	exit;
 }
@ -43,13 +44,13 @@ global $adminer, $connection, $driver, $drivers, $edit_functions, $enum_length,
 if (!$_SERVER["REQUEST_URI"]) { // IIS 5 compatibility
 	$_SERVER["REQUEST_URI"] = $_SERVER["ORIG_PATH_INFO"];
 }
-if (!strpos($_SERVER["REQUEST_URI"], '?') && $_SERVER["QUERY_STRING"] != "") { // IIS 7 compatibility
+if (isset($_SERVER["QUERY_STRING"]) && !strpos($_SERVER["REQUEST_URI"], '?') && $_SERVER["QUERY_STRING"] != "") { // IIS 7 compatibility
 	$_SERVER["REQUEST_URI"] .= "?$_SERVER[QUERY_STRING]";
 }
-if ($_SERVER["HTTP_X_FORWARDED_PREFIX"]) {
+if (isset($_SERVER["HTTP_X_FORWARDED_PREFIX"]) && $_SERVER["HTTP_X_FORWARDED_PREFIX"]) {
 	$_SERVER["REQUEST_URI"] = $_SERVER["HTTP_X_FORWARDED_PREFIX"] . $_SERVER["REQUEST_URI"];
 }
-$HTTPS = ($_SERVER["HTTPS"] && strcasecmp($_SERVER["HTTPS"], "off")) || ini_bool("session.cookie_secure"); // session.cookie_secure could be set on HTTP if we are behind a reverse proxy
+$HTTPS = (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] && strcasecmp($_SERVER["HTTPS"], "off")) || ini_bool("session.cookie_secure"); // session.cookie_secure could be set on HTTP if we are behind a reverse proxy

@ini_set("session.use_trans_sid", false); // protect links in export, @ - may be disabled
 if (!defined("SID")) {
@ -102,8 +103,16 @@ if ($adminer->operators === null) {
 	$adminer->operator_regexp = $operator_regexp;
 }

-define("SERVER", $_GET[DRIVER]); // read from pgsql=localhost
-define("DB", $_GET["db"]); // for the sake of speed and size
+if (isset($_GET[DRIVER])) {
+	define("SERVER", $_GET[DRIVER]); // read from pgsql=localhost
+} else {
+	define("SERVER", "");
+}
+if (isset($_GET["db"])) {
+	define("DB", $_GET["db"]); // for the sake of speed and size
+} else {
+	define("DB", "");
+}
 define("ME", preg_replace('~\?.*~', '', relative_uri()) . '?'
 	. (sid() ? SID . '&' : '')
 	. (SERVER !== null ? DRIVER . "=" . urlencode(SERVER) . '&' : '')
--- a/adminer/include/connect.inc.php
+++ b/adminer/include/connect.inc.php
@ -5,7 +5,7 @@ function connect_error() {
 		header("HTTP/1.1 404 Not Found");
 		page_header(lang('Database') . ": " . h(DB), lang('Invalid database.'), true);
 	} else {
-		if ($_POST["db"] && !$error) {
+		if (isset($_POST["db"]) && $_POST["db"] && !$error) {
 			queries_redirect(substr(ME, 0, -1), lang('Databases have been dropped.'), drop_databases($_POST["db"]));
 		}

@ -42,17 +42,17 @@ function connect_error() {
 				. "</thead>\n"
 			;

-			$databases = ($_GET["dbsize"] ? count_tables($databases) : array_flip($databases));
+			$databases = (isset($_GET["dbsize"]) && $_GET["dbsize"] ? count_tables($databases) : array_flip($databases));

 			foreach ($databases as $db => $tables) {
 				$root = h(ME) . "db=" . urlencode($db);
 				$id = h("Db-" . $db);
-				echo "<tr" . odd() . ">" . (support("database") ? "<td>" . checkbox("db[]", $db, in_array($db, (array) $_POST["db"]), "", "", "", $id) : "");
+				echo "<tr" . odd() . ">" . (support("database") ? "<td>" . checkbox("db[]", $db, in_array($db, (array) (isset($_POST["db"]) ? $_POST["db"] : [])), "", "", "", $id) : "");
 				echo "<th><a href='$root' id='$id'>" . h($db) . "</a>";
 				$collation = h(db_collation($db, $collations));
 				echo "<td>" . (support("database") ? "<a href='$root" . ($scheme ? "&amp;ns=" : "") . "&amp;database=' title='" . lang('Alter database') . "'>$collation</a>" : $collation);
-				echo "<td align='right'><a href='$root&amp;schema=' id='tables-" . h($db) . "' title='" . lang('Database schema') . "'>" . ($_GET["dbsize"] ? $tables : "?") . "</a>";
-				echo "<td align='right' id='size-" . h($db) . "'>" . ($_GET["dbsize"] ? db_size($db) : "?");
+				echo "<td align='right'><a href='$root&amp;schema=' id='tables-" . h($db) . "' title='" . lang('Database schema') . "'>" . (isset($_GET["dbsize"]) && $_GET["dbsize"] ? $tables : "?") . "</a>";
+				echo "<td align='right' id='size-" . h($db) . "'>" . (isset($_GET["dbsize"]) && $_GET["dbsize"] ? db_size($db) : "?");
 				echo "\n";
 			}

@ -82,8 +82,8 @@ if (isset($_GET["import"])) {
 	$_GET["sql"] = $_GET["import"];
 }

-if (!(DB != "" ? $connection->select_db(DB) : isset($_GET["sql"]) || isset($_GET["dump"]) || isset($_GET["database"]) || isset($_GET["processlist"]) || isset($_GET["privileges"]) || isset($_GET["user"]) || isset($_GET["variables"]) || $_GET["script"] == "connect" || $_GET["script"] == "kill")) {
-	if (DB != "" || $_GET["refresh"]) {
+if (!(DB != "" ? $connection->select_db(DB) : isset($_GET["sql"]) || isset($_GET["dump"]) || isset($_GET["database"]) || isset($_GET["processlist"]) || isset($_GET["privileges"]) || isset($_GET["user"]) || isset($_GET["variables"]) || (isset($_GET["script"]) && $_GET["script"] == "connect") || (isset($_GET["script"]) && $_GET["script"] == "kill"))) {
+	if (DB != "" || (isset($_GET["refresh"]) && $_GET["refresh"])) {
 		restart_session();
 		set_session("dbs", null);
 	}
--- a/adminer/include/design.inc.php
+++ b/adminer/include/design.inc.php
@ -35,9 +35,21 @@ function page_header($title, $error = "", $breadcrumb = array(), $title2 = "") {
 <body class="<?php echo lang('ltr'); ?> nojs <?php echo $GLOBALS['project']; ?>">
 <?php
 	$filename = get_temp_dir() . "/adminer.version";
-	if (!$_COOKIE["adminer_version"] && file_exists($filename) && filemtime($filename) + 86400 > time()) { // 86400 - 1 day in seconds
+	if ((isset($_COOKIE["adminer_version"]) === false || !$_COOKIE["adminer_version"]) && function_exists('openssl_verify') && file_exists($filename) && filemtime($filename) + 86400 > time()) { // 86400 - 1 day in seconds
 		$version = unserialize(file_get_contents($filename));
-		$_COOKIE["adminer_version"] = $version["version"]; // doesn't need to send to the browser
+		$public = "-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwqWOVuF5uw7/+Z70djoK
+RlHIZFZPO0uYRezq90+7Amk+FDNd7KkL5eDve+vHRJBLAszF/7XKXe11xwliIsFs
+DFWQlsABVZB3oisKCBEuI71J4kPH8dKGEWR9jDHFw3cWmoH3PmqImX6FISWbG3B8
+h7FIx3jEaw5ckVPVTeo5JRm/1DZzJxjyDenXvBQ/6o9DgZKeNDgxwKzH+sw9/YCO
+jHnq1cFpOIISzARlrHMa/43YfeNRAm/tsBXjSxembBPo7aQZLAWHmaj5+K19H10B
+nCpz9Y++cipkVEiKRGih4ZEvjoFysEOdRLj6WiD/uUNky4xGeA6LaJqh5XpkFkcQ
+fQIDAQAB
+-----END PUBLIC KEY-----
+";
+		if (openssl_verify($version["version"], base64_decode($version["signature"]), $public) == 1) {
+			$_COOKIE["adminer_version"] = $version["version"]; // doesn't need to send to the browser
+		}
 	}
 	?>
 <script<?php echo nonce(); ?>>
@ -64,11 +76,11 @@ var thousandsSeparator = '<?php echo js_escape(lang(',')); ?>';
 			echo "$server\n";
 		} else {
 			echo "<a href='" . h($link) . "' accesskey='1' title='Alt+Shift+1'>$server</a> &raquo; ";
-			if ($_GET["ns"] != "" || (DB != "" && is_array($breadcrumb))) {
+			if ((isset($_GET["ns"]) && $_GET["ns"] != "") || (DB != "" && is_array($breadcrumb))) {
 				echo '<a href="' . h($link . "&db=" . urlencode(DB) . (support("scheme") ? "&ns=" : "")) . '">' . h(DB) . '</a> &raquo; ';
 			}
 			if (is_array($breadcrumb)) {
-				if ($_GET["ns"] != "") {
+				if (isset($_GET["ns"]) && $_GET["ns"] != "") {
 					echo '<a href="' . h(substr(ME, 0, -1)) . '">' . h($_GET["ns"]) . '</a> &raquo; ';
 				}
 				foreach ($breadcrumb as $key => $val) {
@ -121,8 +133,8 @@ function csp() {
 	return array(
 		array(
 			"script-src" => "'self' 'unsafe-inline' 'nonce-" . get_nonce() . "' 'strict-dynamic'", // 'self' is a fallback for browsers not supporting 'strict-dynamic', 'unsafe-inline' is a fallback for browsers not supporting 'nonce-'
-			"connect-src" => "'self' https://api.github.com/repos/adminerevo/adminerevo/releases/latest",
-			"frame-src" => "'self'",
+			"connect-src" => "'self'",
+			"frame-src" => "https://www.adminer.org",
 			"object-src" => "'none'",
 			"base-uri" => "'none'",
 			"form-action" => "'self'",
--- a/adminer/include/driver.inc.php
+++ b/adminer/include/driver.inc.php
@ -47,7 +47,7 @@ function get_driver($id) {
 		$query = $adminer->selectQueryBuild($select, $where, $group, $order, $limit, $page);
 		if (!$query) {
 			$query = "SELECT" . limit(
-				($_GET["page"] != "last" && $limit != "" && $group && $is_group && $jush == "sql" ? "SQL_CALC_FOUND_ROWS " : "") . implode(", ", $select) . "\nFROM " . table($table),
+				(isset($_GET["page"]) && $_GET["page"] != "last" && $limit != "" && $group && $is_group && $jush == "sql" ? "SQL_CALC_FOUND_ROWS " : "") . implode(", ", $select) . "\nFROM " . table($table),
 				($where ? "\nWHERE " . implode(" AND ", $where) : "") . ($group && $is_group ? "\nGROUP BY " . implode(", ", $group) : "") . ($order ? "\nORDER BY " . implode(", ", $order) : ""),
 				($limit != "" ? +$limit : null),
 				($page ? $limit * $page : 0),
--- a/adminer/include/editing.inc.php
+++ b/adminer/include/editing.inc.php
@ -104,8 +104,8 @@ function referencable_primary($self) {
 	foreach (table_status('', true) as $table_name => $table) {
 		if ($table_name != $self && fk_support($table)) {
 			foreach (fields($table_name) as $field) {
-				if ($field["primary"]) {
-					if ($return[$table_name]) { // multi column primary key
+				if (isset($field["primary"]) && $field["primary"]) {
+					if (isset($return[$table_name]) && $return[$table_name]) { // multi column primary key
 						unset($return[$table_name]);
 						break;
 					}
@ -121,7 +121,10 @@ function referencable_primary($self) {
 * @return array
 */
 function adminer_settings() {
-	parse_str($_COOKIE["adminer_settings"], $settings);
+	$settings = [];
+	if (isset($_COOKIE["adminer_settings"])) {
+		parse_str($_COOKIE["adminer_settings"], $settings);
+	}
 	return $settings;
 }

@ -131,7 +134,7 @@ function adminer_settings() {
 */
 function adminer_setting($key) {
 	$settings = adminer_settings();
-	return $settings[$key];
+	return (isset($settings[$key]) ? $settings[$key] : null);
 }

 /** Store settings to a cookie
@ -182,11 +185,11 @@ if ($foreign_keys) {
 	$structured_types[lang('Foreign keys')] = $foreign_keys;
 }
 echo optionlist(array_merge($extra_types, $structured_types), $type);
-?></select><td><input name="<?php echo h($key); ?>[length]" value="<?php echo h($field["length"]); ?>" size="3"<?php echo (!$field["length"] && preg_match('~var(char|binary)$~', $type) ? " class='required'" : ""); //! type="number" with enabled JavaScript ?> aria-labelledby="label-length"><td class="options"><?php
-	echo "<select name='" . h($key) . "[collation]'" . (preg_match('~(char|text|enum|set)$~', $type) ? "" : " class='hidden'") . '><option value="">(' . lang('collation') . ')' . optionlist($collations, $field["collation"]) . '</select>';
-	echo ($unsigned ? "<select name='" . h($key) . "[unsigned]'" . (!$type || preg_match(number_type(), $type) ? "" : " class='hidden'") . '><option>' . optionlist($unsigned, $field["unsigned"]) . '</select>' : '');
-	echo (isset($field['on_update']) ? "<select name='" . h($key) . "[on_update]'" . (preg_match('~timestamp|datetime~', $type) ? "" : " class='hidden'") . '>' . optionlist(array("" => "(" . lang('ON UPDATE') . ")", "CURRENT_TIMESTAMP"), (preg_match('~^CURRENT_TIMESTAMP~i', $field["on_update"]) ? "CURRENT_TIMESTAMP" : $field["on_update"])) . '</select>' : '');
-	echo ($foreign_keys ? "<select name='" . h($key) . "[on_delete]'" . (preg_match("~`~", $type) ? "" : " class='hidden'") . "><option value=''>(" . lang('ON DELETE') . ")" . optionlist(explode("|", $on_actions), $field["on_delete"]) . "</select> " : " "); // space for IE
+?></select><td><input name="<?php echo h($key); ?>[length]" value="<?php echo h(isset($field["length"]) ? $field["length"] : null); ?>" size="3"<?php echo ((isset($field["length"]) === false || !$field["length"]) && preg_match('~var(char|binary)$~', $type) ? " class='required'" : ""); //! type="number" with enabled JavaScript ?> aria-labelledby="label-length"><td class="options"><?php
+	echo "<select name='" . h($key) . "[collation]'" . (preg_match('~(char|text|enum|set)$~', $type) ? "" : " class='hidden'") . '><option value="">(' . lang('collation') . ')' . optionlist($collations, (isset($field["collation"]) ? $field["collation"] : null)) . '</select>';
+	echo ($unsigned ? "<select name='" . h($key) . "[unsigned]'" . (!$type || preg_match(number_type(), $type) ? "" : " class='hidden'") . '><option>' . optionlist($unsigned, (isset($field["unsigned"]) ? $field["unsigned"] : null)) . '</select>' : '');
+	echo (isset($field['on_update']) ? "<select name='" . h($key) . "[on_update]'" . (preg_match('~timestamp|datetime~', $type) ? "" : " class='hidden'") . '>' . optionlist(array("" => "(" . lang('ON UPDATE') . ")", "CURRENT_TIMESTAMP"), (preg_match('~^CURRENT_TIMESTAMP~i', (isset($field["on_update"]) ? $field["on_update"] : null)) ? "CURRENT_TIMESTAMP" : $field["on_update"])) . '</select>' : '');
+	echo ($foreign_keys ? "<select name='" . h($key) . "[on_delete]'" . (preg_match("~`~", $type) ? "" : " class='hidden'") . "><option value=''>(" . lang('ON DELETE') . ")" . optionlist(explode("|", $on_actions), (isset($field["on_delete"]) ? $field["on_delete"] : null)) . "</select> " : " "); // space for IE
 }

 /** Filter length value including enums
@ -227,11 +230,11 @@ function process_field($field, $type_field) {
 	return array(
 		idf_escape(trim($field["field"])),
 		process_type($type_field),
-		($field["null"] ? " NULL" : " NOT NULL"), // NULL for timestamp
+		(isset($field["null"]) && $field["null"] ? " NULL" : " NOT NULL"), // NULL for timestamp
 		default_value($field),
 		(preg_match('~timestamp|datetime~', $field["type"]) && $field["on_update"] ? " ON UPDATE $field[on_update]" : ""),
 		(support("comment") && $field["comment"] != "" ? " COMMENT " . q($field["comment"]) : ""),
-		($field["auto_increment"] ? auto_increment() : null),
+		(isset($field["auto_increment"]) && $field["auto_increment"] ? auto_increment() : null),
 	);
 }

@ -307,7 +310,7 @@ function edit_fields($fields, $collations, $type = "TABLE", $foreign_keys = arra
 <th><?php if ($display) { ?><input name="fields[<?php echo $i; ?>][field]" value="<?php echo h($field["field"]); ?>" data-maxlength="64" autocapitalize="off" aria-labelledby="label-name"><?php } ?>
 <input type="hidden" name="fields[<?php echo $i; ?>][orig]" value="<?php echo h($orig); ?>"><?php edit_type("fields[$i]", $field, $collations, $foreign_keys); ?>
 <?php if ($type == "TABLE") { ?>
-<td><?php echo checkbox("fields[$i][null]", 1, $field["null"], "", "", "block", "label-null"); ?>
+<td><?php echo checkbox("fields[$i][null]", 1, isset($field["null"]) ? $field["null"] : null, "", "", "block", "label-null"); ?>
 <td><label class="block"><input type="radio" name="auto_increment_col" value="<?php echo $i; ?>"<?php if ($field["auto_increment"]) { ?> checked<?php } ?> aria-labelledby="label-ai"></label><td<?php echo $default_class; ?>><?php
 			echo checkbox("fields[$i][has_default]", 1, $field["has_default"], "", "", "", "label-default"); ?><input name="fields[<?php echo $i; ?>][default]" value="<?php echo h($field["default"]); ?>" aria-labelledby="label-default"><?php
 			echo (support("comment") ? "<td$comment_class><input name='fields[$i][comment]' value='" . h($field["comment"]) . "' data-maxlength='" . (min_version(5.5) ? 1024 : 255) . "' aria-labelledby='label-comment'>" : "");
@ -328,7 +331,7 @@ function edit_fields($fields, $collations, $type = "TABLE", $foreign_keys = arra
 */
 function process_fields(&$fields) {
 	$offset = 0;
-	if ($_POST["up"]) {
+	if (isset($_POST["up"]) && $_POST["up"]) {
 		$last = 0;
 		foreach ($fields as $key => $field) {
 			if (key($_POST["up"]) == $key) {
@ -341,7 +344,7 @@ function process_fields(&$fields) {
 			}
 			$offset++;
 		}
-	} elseif ($_POST["down"]) {
+	} elseif (isset($_POST["down"]) && $_POST["down"]) {
 		$found = false;
 		foreach ($fields as $key => $field) {
 			if (isset($field["field"]) && $found) {
@ -354,10 +357,10 @@ function process_fields(&$fields) {
 			}
 			$offset++;
 		}
-	} elseif ($_POST["add"]) {
+	} elseif (isset($_POST["add"]) && $_POST["add"]) {
 		$fields = array_values($fields);
 		array_splice($fields, key($_POST["add"]), 0, array(array()));
-	} elseif (!$_POST["drop_col"]) {
+	} elseif (isset($_POST["drop_col"]) === false || !$_POST["drop_col"]) {
 		return false;
 	}
 	return true;
@ -545,7 +548,7 @@ function doc_link($paths, $text = "<sup>?</sup>") {
 		$urls['sql'] = "https://mariadb.com/kb/en/library/";
 		$paths['sql'] = (isset($paths['mariadb']) ? $paths['mariadb'] : str_replace(".html", "/", $paths['sql']));
 	}
-	return ($paths[$jush] ? "<a href='" . h($urls[$jush] . $paths[$jush]) . "'" . target_blank() . ">$text</a>" : "");
+	return (isset($paths[$jush]) && $paths[$jush] ? "<a href='" . h($urls[$jush] . $paths[$jush]) . "'" . target_blank() . ">$text</a>" : "");
 }

 /** Wrap gzencode() for usage in ob_start()
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@ -490,21 +490,25 @@ function escape_key($key) {
 function where($where, $fields = array()) {
 	global $connection, $jush;
 	$return = array();
-	foreach ((array) $where["where"] as $key => $val) {
-		$key = bracket_escape($key, 1); // 1 - back
-		$column = escape_key($key);
-		$return[] = $column
-			. ($jush == "sql" && is_numeric($val) && preg_match('~\.~', $val) ? " LIKE " . q($val) // LIKE because of floats but slow with ints
-				: ($jush == "mssql" ? " LIKE " . q(preg_replace('~[_%[]~', '[\0]', $val)) // LIKE because of text
-				: " = " . unconvert_field($fields[$key], q($val))
-			))
-		; //! enum and set
-		if ($jush == "sql" && preg_match('~char|text~', $fields[$key]["type"] ?? null) && preg_match("~[^ -@]~", $val)) { // not just [a-z] to catch non-ASCII characters
-			$return[] = "$column = " . q($val) . " COLLATE " . charset($connection) . "_bin";
+	if (isset($where["where"])) {
+		foreach ((array) $where["where"] as $key => $val) {
+			$key = bracket_escape($key, 1); // 1 - back
+			$column = escape_key($key);
+			$return[] = $column
+				. ($jush == "sql" && is_numeric($val) && preg_match('~\.~', $val) ? " LIKE " . q($val) // LIKE because of floats but slow with ints
+					: ($jush == "mssql" ? " LIKE " . q(preg_replace('~[_%[]~', '[\0]', $val)) // LIKE because of text
+					: " = " . unconvert_field($fields[$key], q($val))
+				))
+			; //! enum and set
+			if ($jush == "sql" && preg_match('~char|text~', $fields[$key]["type"] ?? null) && preg_match("~[^ -@]~", $val)) { // not just [a-z] to catch non-ASCII characters
+				$return[] = "$column = " . q($val) . " COLLATE " . charset($connection) . "_bin";
+			}
 		}
 	}
-	foreach ((array) $where["null"] as $key) {
-		$return[] = escape_key($key) . " IS NULL";
+	if (isset($where["null"])) {
+		foreach ((array) $where["null"] as $key) {
+			$return[] = escape_key($key) . " IS NULL";
+		}
 	}
 	return implode(" AND ", $return);
 }
@ -595,7 +599,10 @@ function stop_session($force = false) {
 * @return mixed
 */
 function &get_session($key) {
-	return $_SESSION[$key][DRIVER][SERVER][$_GET["username"]];
+	if (isset($_GET["username"]) && isset($_SESSION[$key][DRIVER][SERVER][$_GET["username"]])) {
+		return $_SESSION[$key][DRIVER][SERVER][$_GET["username"]];
+	}
+	return null;
 }

 /** Set session variable for current server
@ -630,7 +637,10 @@ function auth_url($vendor, $server, $username, $db = null) {
 * @return bool
 */
 function is_ajax() {
-	return ($_SERVER["HTTP_X_REQUESTED_WITH"] == "XMLHttpRequest");
+	if (isset($_SERVER["HTTP_X_REQUESTED_WITH"])) {
+		return ($_SERVER["HTTP_X_REQUESTED_WITH"] == "XMLHttpRequest");
+	}
+	return false;
 }

 /** Send Location header and exit
@ -997,7 +1007,7 @@ function input($field, $value, $function) {
 			echo "<textarea$attrs cols='50' rows='12' class='jush-js'>" . h($value) . '</textarea>';
 		} else {
 			// int(3) is only a display hint
-			$maxlength = (!preg_match('~int~', $field["type"]) && preg_match('~^(\d+)(,(\d+))?$~', $field["length"], $match) ? ((preg_match("~binary~", $field["type"]) ? 2 : 1) * $match[1] + ($match[3] ? 1 : 0) + ($match[2] && !$field["unsigned"] ? 1 : 0)) : ($types[$field["type"]] ? $types[$field["type"]] + ($field["unsigned"] ? 0 : 1) : 0));
+			$maxlength = (!preg_match('~int~', $field["type"]) && preg_match('~^(\d+)(,(\d+))?$~', $field["length"], $match) ? ((preg_match("~binary~", $field["type"]) ? 2 : 1) * $match[1] + (isset($match[3]) && $match[3] ? 1 : 0) + (isset($match[2]) && $match[2] && !$field["unsigned"] ? 1 : 0)) : ($types[$field["type"]] ? $types[$field["type"]] + ($field["unsigned"] ? 0 : 1) : 0));
 			if ($jush == 'sql' && min_version(5.6) && preg_match('~time~', $field["type"])) {
 				$maxlength += 7; // microtime
 			}
@ -1505,20 +1515,23 @@ function edit_form($table, $fields, $row, $update) {
 					: (isset($_GET["select"]) ? false : $default)
 				)
 			);
-			if (!$_POST["save"] && is_string($value)) {
+			if ((isset($_POST["save"]) === false || !$_POST["save"]) && is_string($value)) {
 				$value = $adminer->editVal($value, $field);
 			}
 			$fname = null;
 			if (isset($_POST["function"][$name])) {
 				$fname = (string)$_POST["function"][$name];
 			}
-			$function = ($_POST["save"]
-				? $fname
-				: ($update && preg_match('~^CURRENT_TIMESTAMP~i', $field["on_update"])
-					? "now"
-					: ($value === false ? null : ($value !== null ? '' : 'NULL'))
-				)
-			);
+			$function = null;
+			if (isset($_POST["save"])) {
+				$function = ($_POST["save"]
+					? $fname
+					: ($update && preg_match('~^CURRENT_TIMESTAMP~i', $field["on_update"])
+						? "now"
+						: ($value === false ? null : ($value !== null ? '' : 'NULL'))
+					)
+				);
+			}
 			if (!$_POST && !$update && $value == $field["default"] && preg_match('~^[\w.]+\(~', $value)) {
 				$function = "SQL";
 			}
@ -1555,7 +1568,7 @@ function edit_form($table, $fields, $row, $update) {
 		: ($_POST || !$fields ? "" : script("focus(qsa('td', qs('#form'))[1].firstChild);"))
 	);
 	if (isset($_GET["select"])) {
-		hidden_fields(array("check" => (array) $_POST["check"], "clone" => $_POST["clone"], "all" => $_POST["all"]));
+		hidden_fields(array("check" => (array) isset($_POST["check"]) ? $_POST["check"] : null, "clone" => isset($_POST["clone"]) ? $_POST["clone"] : null, "all" => isset($_POST["all"]) ? $_POST["all"] : null));
 	}
 	?>
 <input type="hidden" name="referer" value="<?php echo h(isset($_POST["referer"]) ? $_POST["referer"] : $_SERVER["HTTP_REFERER"]); ?>">
--- a/adminer/include/lang.inc.php
+++ b/adminer/include/lang.inc.php
@ -63,7 +63,7 @@ function get_lang() {
 */
 function lang($idf, $number = null) {
 	global $LANG, $translations;
-	$translation = ($translations[$idf] ? $translations[$idf] : $idf);
+	$translation = (isset($translations[$idf]) ? $translations[$idf] : $idf);
 	if (is_array($translation)) {
 		$pos = ($number == 1 ? 0
 			: ($LANG == 'cs' || $LANG == 'sk' ? ($number && $number < 5 ? 1 : 2) // different forms for 1, 2-4, other
@ -102,10 +102,10 @@ if (isset($_POST["lang"]) && verify_token()) { // $error not yet available
 }

 $LANG = "en";
-if (isset($langs[$_COOKIE["adminer_lang"]])) {
+if (isset($_COOKIE["adminer_lang"]) && isset($langs[$_COOKIE["adminer_lang"]])) {
 	cookie("adminer_lang", $_COOKIE["adminer_lang"]);
 	$LANG = $_COOKIE["adminer_lang"];
-} elseif (isset($langs[$_SESSION["lang"]])) {
+} elseif (isset($_SESSION["lang"]) && isset($langs[$_SESSION["lang"]])) {
 	$LANG = $_SESSION["lang"];
 } else {
 	$accept_language = array();
--- a/adminer/include/version.inc.php
+++ b/adminer/include/version.inc.php
@ -1,2 +1,2 @@
 <?php
-$VERSION = "4.8.4";
+$VERSION = "4.8.4-dev";
--- a/adminer/index.php
+++ b/adminer/index.php
@ -14,7 +14,7 @@ include "./include/tmpfile.inc.php";
 $enum_length = "'(?:''|[^'\\\\]|\\\\.)*'";
 $inout = "IN|OUT|INOUT";

-if (isset($_GET["select"]) && ($_POST["edit"] || $_POST["clone"]) && !$_POST["save"]) {
+if (isset($_GET["select"]) && ((isset($_POST["edit"]) && $_POST["edit"]) || (isset($_POST["clone"]) && $_POST["clone"])) && (isset($_POST["save"]) || !$_POST["save"])) {
 	$_GET["edit"] = $_GET["select"];
 }
 if (isset($_GET["callf"])) {
--- a/adminer/indexes.inc.php
+++ b/adminer/indexes.inc.php
@ -72,7 +72,7 @@ if ($_POST && !$error && !$_POST["add"] && !$_POST["drop_col"]) {
 page_header(lang('Indexes'), $error, array("table" => $TABLE), h($TABLE));

 $fields = array_keys(fields($TABLE));
-if ($_POST["add"]) {
+if (isset($_POST["add"]) && $_POST["add"]) {
 	foreach ($row["indexes"] as $key => $index) {
 		if ($index["columns"][count($index["columns"])] != "") {
 			$row["indexes"][$key]["columns"][] = "";
@ -113,8 +113,8 @@ if ($primary) {
 }
 $j = 1;
 foreach ($row["indexes"] as $index) {
-	if (!$_POST["drop_col"] || $j != key($_POST["drop_col"])) {
-		echo "<tr><td>" . html_select("indexes[$j][type]", array(-1 => "") + $index_types, $index["type"], ($j == count($row["indexes"]) ? "indexesAddRow.call(this);" : 1), "label-type");
+	if (isset($_POST["drop_col"]) === false || !$_POST["drop_col"] || $j != key($_POST["drop_col"])) {
+		echo "<tr><td>" . html_select("indexes[$j][type]", array(-1 => "") + $index_types, isset($index["type"]) ? $index["type"] : null, ($j == count($row["indexes"]) ? "indexesAddRow.call(this);" : 1), "label-type");

 		echo "<td>";
 		ksort($index["columns"]);
@ -127,12 +127,12 @@ foreach ($row["indexes"] as $index) {
 				"partial(" . ($i == count($index["columns"]) ? "indexesAddColumn" : "indexesChangeColumn") . ", '" . js_escape($jush == "sql" ? "" : $_GET["indexes"] . "_") . "')"
 			);
 			echo ($jush == "sql" || $jush == "mssql" ? "<input type='number' name='indexes[$j][lengths][$i]' class='size' value='" . h($index["lengths"][$key]) . "' title='" . lang('Length') . "'>" : "");
-			echo (support("descidx") ? checkbox("indexes[$j][descs][$i]", 1, $index["descs"][$key], lang('descending')) : "");
+			echo (support("descidx") ? checkbox("indexes[$j][descs][$i]", 1, isset($index["descs"][$key]) ? $index["descs"][$key] : null, lang('descending')) : "");
 			echo " </span>";
 			$i++;
 		}

-		echo "<td><input name='indexes[$j][name]' value='" . h($index["name"]) . "' autocapitalize='off' aria-labelledby='label-name'>\n";
+		echo "<td><input name='indexes[$j][name]' value='" . h(isset($index["name"]) ? $index["name"] : null) . "' autocapitalize='off' aria-labelledby='label-name'>\n";
 		echo "<td><input type='image' class='icon' name='drop_col[$j]' src='../adminer/static/cross.gif' alt='x' title='" . lang('Remove') . "'>" . script("qsl('input').onclick = partial(editingRemoveRow, 'indexes\$1[type]');");
 	}
 	$j++;
--- a/adminer/lang/ar.inc.php
+++ b/adminer/lang/ar.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/bg.inc.php
+++ b/adminer/lang/bg.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/bn.inc.php
+++ b/adminer/lang/bn.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/bs.inc.php
+++ b/adminer/lang/bs.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ca.inc.php
+++ b/adminer/lang/ca.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/cs.inc.php
+++ b/adminer/lang/cs.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Copy to clipboard' => 'Kopírovat do schránky',

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => 'Ke stažení je nová verze AdminerEvo!',
 );
--- a/adminer/lang/da.inc.php
+++ b/adminer/lang/da.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/de.inc.php
+++ b/adminer/lang/de.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/el.inc.php
+++ b/adminer/lang/el.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/es.inc.php
+++ b/adminer/lang/es.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/et.inc.php
+++ b/adminer/lang/et.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/fa.inc.php
+++ b/adminer/lang/fa.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/fi.inc.php
+++ b/adminer/lang/fi.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Copy to clipboard' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/fr.inc.php
+++ b/adminer/lang/fr.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => 'Désactiver %s ou activer %s or %s extensions.',

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/gl.inc.php
+++ b/adminer/lang/gl.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/he.inc.php
+++ b/adminer/lang/he.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/hu.inc.php
+++ b/adminer/lang/hu.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/id.inc.php
+++ b/adminer/lang/id.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/it.inc.php
+++ b/adminer/lang/it.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => 'no',

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ja.inc.php
+++ b/adminer/lang/ja.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ka.inc.php
+++ b/adminer/lang/ka.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Copy to clipboard' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ko.inc.php
+++ b/adminer/lang/ko.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/lt.inc.php
+++ b/adminer/lang/lt.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/lv.inc.php
+++ b/adminer/lang/lv.inc.php
@ -306,6 +306,4 @@ $translations = array(
 	'Copy to clipboard' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ms.inc.php
+++ b/adminer/lang/ms.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/nl.inc.php
+++ b/adminer/lang/nl.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => 'neen',

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/no.inc.php
+++ b/adminer/lang/no.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/pl.inc.php
+++ b/adminer/lang/pl.inc.php
@ -10,7 +10,7 @@ $translations = array(
 	'Logout' => 'Wyloguj',
 	'Logged as: %s' => 'Zalogowany jako: %s',
 	'Logout successful.' => 'Wylogowano pomyślnie.',
-	// 'Invalid credentials.' => 'Nieprawidłowy serwer lub dane logowania.',
+	'Invalid credentials.' => 'Nieprawidłowy serwer lub dane logowania.',
 	'Too many unsuccessful logins, try again in %d minute(s).' => array('Za dużo nieudanych prób logowania, spróbuj ponownie za %d minutę.', 'Za dużo nieudanych prób logowania, spróbuj ponownie za %d minuty.', 'Za dużo nieudanych prób logowania, spróbuj ponownie za %d minut.'),
 	'Master password expired. <a href="https://www.adminer.org/en/extension/"%s>Implement</a> %s method to make it permanent.' => 'Ważność hasła głównego wygasła. <a href="https://www.adminer.org/pl/extension/"%s>Zaimplementuj</a> własną metodę %s, aby ustawić je na stałe.',
 	'Language' => 'Język',
@ -350,7 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
-	'Invalid server or credentials.' => null,
 );
--- a/adminer/lang/pt-br.inc.php
+++ b/adminer/lang/pt-br.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'HH:MM:SS' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/pt.inc.php
+++ b/adminer/lang/pt.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'HH:MM:SS' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ro.inc.php
+++ b/adminer/lang/ro.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ru.inc.php
+++ b/adminer/lang/ru.inc.php
@ -304,5 +304,5 @@ $translations = array(
 	'Copy to clipboard' => 'Скопировать в буфер обмена',
 	'Disable %s or enable %s or %s extensions.' => 'Отключите %s или включите расширения %s или %s.',

-	'A newer version of AdminerEvo is available, download it now!' => null,
+	
 );
--- a/adminer/lang/sk.inc.php
+++ b/adminer/lang/sk.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => 'nie',

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => 'Stiahnite si novú verziu AdminerEvo!',
 );
--- a/adminer/lang/sl.inc.php
+++ b/adminer/lang/sl.inc.php
@ -347,6 +347,4 @@ $translations = array(
 	'HH:MM:SS' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/sr.inc.php
+++ b/adminer/lang/sr.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/sv.inc.php
+++ b/adminer/lang/sv.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Copy to clipboard' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/ta.inc.php
+++ b/adminer/lang/ta.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/th.inc.php
+++ b/adminer/lang/th.inc.php
@ -305,6 +305,4 @@ $translations = array(
 	'no' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/tr.inc.php
+++ b/adminer/lang/tr.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/uk.inc.php
+++ b/adminer/lang/uk.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/vi.inc.php
+++ b/adminer/lang/vi.inc.php
@ -349,6 +349,4 @@ $translations = array(
 	'Disable %s or enable %s or %s extensions.' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/xx.inc.php
+++ b/adminer/lang/xx.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Copy to clipboard' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/zh-tw.inc.php
+++ b/adminer/lang/zh-tw.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Copy to clipboard' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/lang/zh.inc.php
+++ b/adminer/lang/zh.inc.php
@ -350,6 +350,4 @@ $translations = array(
 	'Copy to clipboard' => null,

 	// 'Thanks for using Adminer, consider <a href="https://www.adminer.org/en/donation/">donating</a>.' => null,
-
-	'A newer version of AdminerEvo is available, download it now!' => null,
 );
--- a/adminer/select.inc.php
+++ b/adminer/select.inc.php
@ -4,8 +4,12 @@ $table_status = table_status1($TABLE);
 $indexes = indexes($TABLE);
 $fields = fields($TABLE);
 $foreign_keys = column_foreign_keys($TABLE);
-$oid = $table_status["Oid"];
-parse_str($_COOKIE["adminer_import"], $adminer_import);
+$oid = (isset($table_status["Oid"]) ? $table_status["Oid"] : null);
+if (isset($_COOKIE["adminer_import"])) {
+	parse_str($_COOKIE["adminer_import"], $adminer_import);
+} else {
+	$adminer_import = [];
+}

 $rights = array(); // privilege => 0
 $columns = array(); // selectable columns
@ -22,12 +26,12 @@ foreach ($fields as $key => $field) {
 }

 list($select, $group) = $adminer->selectColumnsProcess($columns, $indexes);
-$is_group = count($group) < count($select) || strstr($select[0], "DISTINCT");
+$is_group = count($group) < count($select) || (isset($select[0]) && strstr($select[0], "DISTINCT"));
 $where = $adminer->selectSearchProcess($fields, $indexes);
 $order = $adminer->selectOrderProcess($fields, $indexes);
 $limit = $adminer->selectLimitProcess();

-if ($_GET["val"] && is_ajax()) {
+if (isset($_GET["val"]) && $_GET["val"] && is_ajax()) {
 	header("Content-Type: text/plain; charset=utf-8");
 	foreach ($_GET["val"] as $unique_idf => $row) {
 		$as = convert_field($fields[key($row)]);
@ -61,7 +65,7 @@ if ($oid && !$primary) {

 if ($_POST && !$error) {
 	$where_check = $where;
-	if (!$_POST["all"] && is_array($_POST["check"])) {
+	if ((isset($_POST["all"]) === false || !$_POST["all"]) && (isset($_POST["check"]) && is_array($_POST["check"]))) {
 		$checks = array();
 		foreach ($_POST["check"] as $check) {
 			$checks[] = where_check($check, $fields);
@ -69,7 +73,7 @@ if ($_POST && !$error) {
 		$where_check[] = "((" . implode(") OR (", $checks) . "))";
 	}
 	$where_check = ($where_check ? "\nWHERE " . implode(" AND ", $where_check) : "");
-	if ($_POST["export"]) {
+	if (isset($_POST["export"]) && $_POST["export"]) {
 		cookie("adminer_import", "output=" . urlencode($_POST["output"]) . "&format=" . urlencode($_POST["format"]));
 		dump_headers($TABLE);
 		$adminer->dumpTable($TABLE, "");
@ -92,11 +96,11 @@ if ($_POST && !$error) {
 	}

 	if (!$adminer->selectEmailProcess($where, $foreign_keys)) {
-		if ($_POST["save"] || $_POST["delete"]) { // edit
+		if ((isset($_POST["save"]) && $_POST["save"]) || (isset($_POST["delete"]) && $_POST["delete"])) { // edit
 			$result = true;
 			$affected = 0;
 			$set = array();
-			if (!$_POST["delete"]) {
+			if (isset($_POST["delete"]) === false || !$_POST["delete"]) {
 				foreach ($columns as $name => $val) { //! should check also for edit or insert privileges
 					$val = process_input($fields[$name]);
 					if ($val !== null && ($_POST["clone"] || $val !== false)) {
@ -104,11 +108,11 @@ if ($_POST && !$error) {
 					}
 				}
 			}
-			if ($_POST["delete"] || $set) {
-				if ($_POST["clone"]) {
+			if ((isset($_POST["delete"]) && $_POST["delete"]) || $set) {
+				if (isset($_POST["clone"]) && $_POST["clone"]) {
 					$query = "INTO " . table($TABLE) . " (" . implode(", ", array_keys($set)) . ")\nSELECT " . implode(", ", $set) . "\nFROM " . table($TABLE);
 				}
-				if ($_POST["all"] || ($primary && is_array($_POST["check"])) || $is_group) {
+				if ((isset($_POST["all"]) && $_POST["all"]) || ($primary && isset($_POST["check"]) && is_array($_POST["check"])) || $is_group) {
 					$result = ($_POST["delete"]
 						? $driver->delete($TABLE, $where_check)
 						: ($_POST["clone"]
@ -121,7 +125,7 @@ if ($_POST && !$error) {
 					foreach ((array) $_POST["check"] as $val) {
 						// where is not unique so OR can't be used
 						$where2 = "\nWHERE " . ($where ? implode(" AND ", $where) . " AND " : "") . where_check($val, $fields);
-						$result = ($_POST["delete"]
+						$result = (isset($_POST["delete"]) && $_POST["delete"]
 							? $driver->delete($TABLE, $where2, 1)
 							: ($_POST["clone"]
 								? queries("INSERT" . limit1($TABLE, $query, $where2))
@ -136,13 +140,13 @@ if ($_POST && !$error) {
 				}
 			}
 			$message = lang('%d item(s) have been affected.', $affected);
-			if ($_POST["clone"] && $result && $affected == 1) {
+			if (isset($_POST["clone"]) && $_POST["clone"] && $result && $affected == 1) {
 				$last_id = last_id();
 				if ($last_id) {
 					$message = lang('Item%s has been inserted.', " $last_id");
 				}
 			}
-			queries_redirect(remove_from_uri($_POST["all"] && $_POST["delete"] ? "page" : ""), $message, $result);
+			queries_redirect(remove_from_uri(isset($_POST["all"]) && $_POST["all"] && isset($_POST["delete"]) && $_POST["delete"] ? "page" : ""), $message, $result);
 			if (!$_POST["delete"]) {
 				edit_form($TABLE, $fields, (array) $_POST["fields"], !$_POST["clone"]);
 				page_footer();
@ -225,11 +229,13 @@ if (is_ajax()) {
 $set = null;
 if (isset($rights["insert"]) || !support("table")) {
 	$set = "";
-	foreach ((array) $_GET["where"] as $val) {
-		if ($foreign_keys[$val["col"]] && count($foreign_keys[$val["col"]]) == 1 && ($val["op"] == "="
-			|| (!$val["op"] && !preg_match('~[_%]~', $val["val"])) // LIKE in Editor
-		)) {
-			$set .= "&set" . urlencode("[" . bracket_escape($val["col"]) . "]") . "=" . urlencode($val["val"]);
+	if (isset($_GET["where"])) {
+		foreach ((array) $_GET["where"] as $val) {
+			if ($foreign_keys[$val["col"]] && count($foreign_keys[$val["col"]]) == 1 && ($val["op"] == "="
+				|| (!$val["op"] && !preg_match('~[_%]~', $val["val"])) // LIKE in Editor
+			)) {
+				$set .= "&set" . urlencode("[" . bracket_escape($val["col"]) . "]") . "=" . urlencode($val["val"]);
+			}
 		}
 	}
 }
@ -253,7 +259,7 @@ if (!$columns && support("table")) {
 	$adminer->selectActionPrint($indexes);
 	echo "</form>\n";

-	$page = $_GET["page"];
+	$page = (isset($_GET["page"]) ? $_GET["page"] : null);
 	if ($page == "last") {
 		$found_rows = $connection->result(count_rows($TABLE, $where, $is_group, $group));
 		$page = floor(max(0, $found_rows - 1) / $limit);
@ -301,7 +307,7 @@ if (!$columns && support("table")) {
 		}

 		// use count($rows) without LIMIT, COUNT(*) without grouping, FOUND_ROWS otherwise (slowest)
-		if ($_GET["page"] != "last" && $limit != "" && $group && $is_group && $jush == "sql") {
+		if (isset($_GET["page"]) && $_GET["page"] != "last" && $limit != "" && $group && $is_group && $jush == "sql") {
 			$found_rows = $connection->result(" SELECT FOUND_ROWS()"); // space to allow mysql.trace_mode
 		}

@ -316,7 +322,7 @@ if (!$columns && support("table")) {
 			echo "<thead><tr>" . (!$group && $select
 				? ""
 				: "<td><input type='checkbox' id='all-page' class='jsonly'>" . script("qs('#all-page').onclick = partial(formCheck, /check/);", "")
-					. " <a href='" . h($_GET["modify"] ? remove_from_uri("modify") : $_SERVER["REQUEST_URI"] . "&modify=1") . "' title='" . lang('Modify') . "' class='edit-all'>" . lang('Modify') . "</a>");
+					. " <a href='" . h(isset($_GET["modify"]) && $_GET["modify"] ? remove_from_uri("modify") : $_SERVER["REQUEST_URI"] . "&modify=1") . "' title='" . lang('Modify') . "' class='edit-all'>" . lang('Modify') . "</a>");
 			$names = array();
 			$functions = array();
 			reset($select);
@ -333,7 +339,7 @@ if (!$columns && support("table")) {
 						$href = remove_from_uri('(order|desc)[^=]*|page') . '&order%5B0%5D=' . urlencode($key);
 						$desc = "&desc%5B0%5D=1";
 						echo "<th id='th[" . h(bracket_escape($key)) . "]'>" . script("mixin(qsl('th'), {onmouseover: partial(columnMouse), onmouseout: partial(columnMouse, ' hidden')});", "");
-						echo '<a href="' . h($href . ($order[0] == $column || $order[0] == $key || (!$order && $is_group && $group[0] == $column) ? $desc : '')) . '">'; // $order[0] == $key - COUNT(*)
+						echo '<a href="' . h($href . ((isset($order[0]) && $order[0] == $column) || (isset($order[0]) && $order[0] == $key) || (!$order && $is_group && $group[0] == $column) ? $desc : '')) . '">'; // $order[0] == $key - COUNT(*)
 						echo apply_sql_function($val["fun"] ?? null, $name) . "</a>"; //! columns looking like functions
 						echo "<span class='column hidden'>";
 						echo "<a href='" . h($href . $desc) . "' title='" . lang('descending') . "' class='text'> ↓</a>";
@ -349,7 +355,7 @@ if (!$columns && support("table")) {
 			}

 			$lengths = array();
-			if ($_GET["modify"]) {
+			if (isset($_GET["modify"]) && $_GET["modify"]) {
 				foreach ($rows as $row) {
 					foreach ($row as $key => $val) {
 						$lengths[$key] = max($lengths[$key], min(40, strlen(utf8_decode($val))));
@ -386,7 +392,7 @@ if (!$columns && support("table")) {
 					$unique_idf .= "&" . ($val !== null ? urlencode("where[" . bracket_escape($key) . "]") . "=" . urlencode($val === false ? "f" : $val) : "null%5B%5D=" . urlencode($key));
 				}
 				echo "<tr" . odd() . ">" . (!$group && $select ? "" : "<td>"
-					. checkbox("check[]", substr($unique_idf, 1), in_array(substr($unique_idf, 1), (array) $_POST["check"]))
+					. checkbox("check[]", substr($unique_idf, 1), in_array(substr($unique_idf, 1), (array) (isset($_POST["check"]) ? $_POST["check"] : null)))
 					. ($is_group || information_schema(DB) ? "" : " <a href='" . h(ME . "edit=" . urlencode($TABLE) . $unique_idf) . "' class='edit' title='" . lang('edit') . "'>" . lang('edit') . "</a>")
 				);

@ -403,18 +409,20 @@ if (!$columns && support("table")) {
 							$link = ME . 'download=' . urlencode($TABLE) . '&field=' . urlencode($key) . $unique_idf;
 						}
 						if (!$link && $val !== null) { // link related items
-							foreach ((array) $foreign_keys[$key] as $foreign_key) {
-								if (count($foreign_keys[$key]) == 1 || end($foreign_key["source"]) == $key) {
-									$link = "";
-									foreach ($foreign_key["source"] as $i => $source) {
-										$link .= where_link($i, $foreign_key["target"][$i], $rows[$n][$source]);
-									}
-									$link = ($foreign_key["db"] != "" ? preg_replace('~([?&]db=)[^&]+~', '\1' . urlencode($foreign_key["db"]), ME) : ME) . 'select=' . urlencode($foreign_key["table"]) . $link; // InnoDB supports non-UNIQUE keys
-									if ($foreign_key["ns"]) {
-										$link = preg_replace('~([?&]ns=)[^&]+~', '\1' . urlencode($foreign_key["ns"]), $link);
-									}
-									if (count($foreign_key["source"]) == 1) {
-										break;
+							if (isset($foreign_keys[$key])) {
+								foreach ((array) $foreign_keys[$key] as $foreign_key) {
+									if (count($foreign_keys[$key]) == 1 || end($foreign_key["source"]) == $key) {
+										$link = "";
+										foreach ($foreign_key["source"] as $i => $source) {
+											$link .= where_link($i, $foreign_key["target"][$i], $rows[$n][$source]);
+										}
+										$link = ($foreign_key["db"] != "" ? preg_replace('~([?&]db=)[^&]+~', '\1' . urlencode($foreign_key["db"]), ME) : ME) . 'select=' . urlencode($foreign_key["table"]) . $link; // InnoDB supports non-UNIQUE keys
+										if ($foreign_key["ns"]) {
+											$link = preg_replace('~([?&]ns=)[^&]+~', '\1' . urlencode($foreign_key["ns"]), $link);
+										}
+										if (count($foreign_key["source"]) == 1) {
+											break;
+										}
 									}
 								}
 							}
@ -441,7 +449,7 @@ if (!$columns && support("table")) {
 						$editable = !is_array($row[$key]) && is_utf8($val) && $rows[$n][$key] == $row[$key] && !$functions[$key];
 						$text = preg_match('~text|lob~', $field["type"] ?? null);
 						echo "<td id='$id'";
-						if (($_GET["modify"] && $editable) || $value !== null) {
+						if ((isset($_GET["modify"]) && $_GET["modify"] && $editable) || $value !== null) {
 							$h_value = h($value !== null ? $value : $row[$key]);
 							echo ">" . ($text ? "<textarea name='$id' cols='30' rows='" . (substr_count($row[$key], "\n") + 1) . "'>$h_value</textarea>" : "<input name='$id' value='$h_value' size='$lengths[$key]'>");
 						} else {
@ -471,7 +479,8 @@ if (!$columns && support("table")) {
 		if (!is_ajax()) {
 			if ($rows || $page) {
 				$exact_count = true;
-				if ($_GET["page"] != "last") {
+				$found_rows = null;
+				if (isset($_GET["page"]) && $_GET["page"] != "last") {
 					if ($limit == "" || (count($rows) < $limit && ($rows || !$page))) {
 						$found_rows = ($page ? $page * $limit : 0) + count($rows);
 					} elseif ($jush != "sql" || !$is_group) {
@ -536,8 +545,8 @@ if (!$columns && support("table")) {

 				if ($adminer->selectCommandPrint()) {
 					?>
-<fieldset<?php echo ($_GET["modify"] ? '' : ' class="jsonly"'); ?>><legend><?php echo lang('Modify'); ?></legend><div>
-<input type="submit" value="<?php echo lang('Save'); ?>"<?php echo ($_GET["modify"] ? '' : ' title="' . lang('Ctrl+click on a value to modify it.') . '"'); ?>>
+<fieldset<?php echo (isset($_GET["modify"]) && $_GET["modify"] ? '' : ' class="jsonly"'); ?>><legend><?php echo lang('Modify'); ?></legend><div>
+<input type="submit" value="<?php echo lang('Save'); ?>"<?php echo (isset($_GET["modify"]) && $_GET["modify"] ? '' : ' title="' . lang('Ctrl+click on a value to modify it.') . '"'); ?>>
 </div></fieldset>
 <fieldset><legend><?php echo lang('Selected'); ?> <span id="selected"></span></legend><div>
 <input type="submit" name="edit" value="<?php echo lang('Edit'); ?>">
@ -548,17 +557,19 @@ if (!$columns && support("table")) {
 				}

 				$format = $adminer->dumpFormat();
-				foreach ((array) $_GET["columns"] as $column) {
-					if ($column["fun"]) {
-						unset($format['sql']);
-						break;
+				if (isset($_GET["columns"])) {
+					foreach ((array) $_GET["columns"] as $column) {
+						if ($column["fun"]) {
+							unset($format['sql']);
+							break;
+						}
 					}
 				}
 				if ($format) {
 					print_fieldset("export", lang('Export') . " <span id='selected2'></span>");
 					$output = $adminer->dumpOutput();
-					echo ($output ? html_select("output", $output, $adminer_import["output"]) . " " : "");
-					echo html_select("format", $format, $adminer_import["format"]);
+					echo ($output ? html_select("output", $output, (isset($adminer_import["output"]) ? $adminer_import["output"] : null)) . " " : "");
+					echo html_select("format", $format, (isset($adminer_import["format"]) ? $adminer_import["format"] : null));
 					echo " <input type='submit' name='export' value='" . lang('Export') . "'>\n";
 					echo "</div></fieldset>\n";
 				}
@ -574,7 +585,7 @@ if (!$columns && support("table")) {
 				echo script("qsl('a').onclick = partial(toggle, 'import');", "");
 				echo "<span id='import' class='hidden'>: ";
 				echo "<input type='file' name='csv_file'> ";
-				echo html_select("separator", array("csv" => "CSV,", "csv;" => "CSV;", "tsv" => "TSV"), $adminer_import["format"], 1); // 1 - select
+				echo html_select("separator", array("csv" => "CSV,", "csv;" => "CSV;", "tsv" => "TSV"), (isset($adminer_import["format"]) ? $adminer_import["format"] : null), 1); // 1 - select
 				echo " <input type='submit' name='import' value='" . lang('Import') . "'>";
 				echo "</span>";
 				echo "</div>";
--- a/adminer/sql.inc.php
+++ b/adminer/sql.inc.php
@ -1,5 +1,5 @@
 <?php
-if (!$error && $_POST["export"]) {
+if (!$error && isset($_POST["export"]) && $_POST["export"]) {
 	dump_headers("sql");
 	$adminer->dumpTable("", "");
 	$adminer->dumpData("", "table", $_POST["query"]);
@ -9,7 +9,7 @@ if (!$error && $_POST["export"]) {
 restart_session();
 $history_all = &get_session("queries");
 $history = &$history_all[DB];
-if (!$error && $_POST["clear"]) {
+if (!$error && isset($_POST["clear"]) && $_POST["clear"]) {
 	$history = array();
 	redirect(remove_from_uri("history"));
 }
@ -87,7 +87,7 @@ if (!$error && $_POST) {
 								$query .= fread($fp, 1e5);
 							} else {
 								$offset = $match[0][1] + strlen($s);
-								if (!isset($s[0]) || $s[0] != "\\") {
+								if ($s[0] != "\\") {
 									break;
 								}
 							}
@ -97,7 +97,7 @@ if (!$error && $_POST) {
 						$empty = false;
 						$q = substr($query, 0, $pos);
 						$commands++;
-						$print = "<pre id='sql-$commands'><code class='jush-$jush copy-to-clipboard'>" . $adminer->sqlCommandQuery($q) . "</code></pre>\n";
+						$print = "<pre id='sql-$commands'><code class='jush-$jush'>" . $adminer->sqlCommandQuery($q) . "</code></pre>\n";
 						$print .= generate_linksbar(["<a href='#' class='copy-to-clipboard'>" . lang('Copy to clipboard') . "</a>"]);
 						if ($jush == "sqlite" && preg_match("~^$space*+ATTACH\\b~i", $q, $match)) {
 							// PHP doesn't support setting SQLITE_LIMIT_ATTACHED
@ -216,16 +216,16 @@ if (!isset($_GET["import"])) {
 	$q = $_GET["sql"]; // overwrite $q from if ($_POST) to save memory
 	if ($_POST) {
 		$q = $_POST["query"];
-	} elseif ($_GET["history"] == "all") {
+	} elseif (isset($_GET["history"]) && $_GET["history"] == "all") {
 		$q = $history;
-	} elseif ($_GET["history"] != "") {
+	} elseif (isset($_GET["history"]) && $_GET["history"] != "") {
 		$q = $history[$_GET["history"]][0];
 	}
 	echo "<p>";
 	textarea("query", $q, 20);
 	echo script(($_POST ? "" : "qs('textarea').focus();\n") . "qs('#form').onsubmit = partial(sqlSubmit, qs('#form'), '" . js_escape(remove_from_uri("sql|limit|error_stops|only_errors|history")) . "');");
 	echo "<p>$execute\n";
-	echo lang('Limit rows') . ": <input type='number' name='limit' class='size' value='" . h($_POST ? $_POST["limit"] : $_GET["limit"]) . "'>\n";
+	echo lang('Limit rows') . ": <input type='number' name='limit' class='size' value='" . h(isset($_POST["limit"]) ? $_POST["limit"] : (isset($_GET["limit"]) ? $_GET["limit"] : null)) . "'>\n";

 } else {
 	echo "<fieldset><legend>" . lang('File upload') . "</legend><div>";
@ -245,8 +245,8 @@ if (!isset($_GET["import"])) {
 	echo "<p>";
 }

-echo checkbox("error_stops", 1, ($_POST ? $_POST["error_stops"] : isset($_GET["import"]) || $_GET["error_stops"]), lang('Stop on error')) . "\n";
-echo checkbox("only_errors", 1, ($_POST ? $_POST["only_errors"] : isset($_GET["import"]) || $_GET["only_errors"]), lang('Show only errors')) . "\n";
+echo checkbox("error_stops", 1, (isset($_POST["error_stops"]) ? $_POST["error_stops"] : isset($_GET["import"]) || (isset($_GET["error_stops"]) && $_GET["error_stops"])), lang('Stop on error')) . "\n";
+echo checkbox("only_errors", 1, (isset($_POST["only_errors"]) ? $_POST["only_errors"] : isset($_GET["import"]) || (isset($_GET["only_errors"]) && $_GET["only_errors"])), lang('Show only errors')) . "\n";
 echo "<input type='hidden' name='token' value='$token'>\n";

 if (!isset($_GET["import"]) && $history) {
--- a/adminer/static/default.css
+++ b/adminer/static/default.css
@ -24,13 +24,13 @@ code { background: #eee; }
 tbody tr:hover td, tbody tr:hover th { background: #eee; }
 pre { margin: 1em 0 0; }
 pre, textarea { font: 100%/1.25 monospace; }
-input, button { vertical-align: middle; border-radius: 5px; padding: 2px; border-width: 1px; }
+input, button { vertical-align: middle; border-radius: 5px; padding: 2px; }
 input.default { box-shadow: 1px 1px 1px #777; }
 input.required { box-shadow: 1px 1px 1px red; }
 input.maxlength { box-shadow: 1px 1px 1px red; }
 input.wayoff { left: -1000px; position: absolute; }
 input[type='submit'] { padding-left: 10px; padding-right: 10px; }
-select { border-radius: 5px; padding: 2px; vertical-align: middle; }
+select { border-radius: 5px; padding: 2px; vertical-align: middle;; }
 fieldset label input[type='checkbox'] { margin-bottom: 6px; }
 fieldset a { line-height: 20px; }
 #fieldset-select .icon, #fieldset-search .icon, #fieldset-sort .icon { cursor: pointer; }
--- a/adminer/static/functions.js
+++ b/adminer/static/functions.js
@ -101,22 +101,27 @@ function cookie(assign, days) {
 */
 function verifyVersion(current, url, token) {
 	cookie('adminer_version=0', 1);
-	ajax('https://api.github.com/repos/adminerevo/adminerevo/releases/latest', function (request) {
-		var data = window.JSON ? JSON.parse(request.responseText) : eval('(' + request.responseText + ')');
-		version = data.tag_name.replace(/[^\d.]/g, '');
-
-		if (version) {
-			cookie('adminer_version=' + version, 1);
-			var data = 'version=' + version;
-			ajax(url + 'script=version', function () {
-			}, data + '&token=' + token);
-
-			if (version != current) {
-				qs('#version').innerText = version;
+	var iframe = document.createElement('iframe');
+	iframe.src = 'https://www.adminer.org/version/?current=' + current;
+	iframe.frameBorder = 0;
+	iframe.marginHeight = 0;
+	iframe.scrolling = 'no';
+	iframe.style.width = '7ex';
+	iframe.style.height = '1.25em';
+	if (window.postMessage && window.addEventListener) {
+		iframe.style.display = 'none';
+		addEventListener('message', function (event) {
+			if (event.origin == 'https://www.adminer.org') {
+				var match = /version=(.+)/.exec(event.data);
+				if (match) {
+					cookie('adminer_version=' + match[1], 1);
+					ajax(url + 'script=version', function () {
+					}, event.data + '&token=' + token);
+				}
 			}
-		}
-
-	});
+		}, false);
+	}
+	qs('#version').appendChild(iframe);
 }

 /** Get value of select
@ -884,21 +889,21 @@ function findDefaultSubmit(el) {
 * @param HTMLElement
 */
 function setupCopyToClipboard(document) {
-	var node = document.querySelectorAll("a.copy-to-clipboard");
-	node.forEach(function(element) {
-		element.addEventListener("click", function() {
+	var node = document.querySelector("a.copy-to-clipboard");
+	if (node) {
+		node.addEventListener("click", function() {
 			var nodeSql = document.querySelector("code.copy-to-clipboard");
 			if (nodeSql == null || nodeSql == undefined) {
 				nodeSql = document.querySelector("textarea.sqlarea");
 			}
 			if (nodeSql != null && nodeSql != undefined) {
-				if (element.classList.contains('expand')) {
-					document.getElementById(element.getAttribute('data-expand-id')).classList.remove("hidden");
+				if (node.classList.contains('expand')) {
+					document.getElementById(node.getAttribute('data-expand-id')).classList.remove("hidden");
 				}
 				copyToClipboard(nodeSql);
 			}
 		});
-	});
+	}
 }

 /** Copy element's content in clipboard
--- a/adminer/trigger.inc.php
+++ b/adminer/trigger.inc.php
@ -1,6 +1,6 @@
 <?php
-$TABLE = $_GET["trigger"];
-$name = $_GET["name"];
+$TABLE = isset($_GET["trigger"]) ? $_GET["trigger"] : null;
+$name = isset($_GET["name"]) ? $_GET["name"] : null;
 $trigger_options = trigger_options();
 $row = (array) trigger($name, $TABLE) + array("Trigger" => $TABLE . "_bi");

@ -10,7 +10,7 @@ if ($_POST) {
 		$on = " ON " . table($TABLE);
 		$drop = "DROP TRIGGER " . idf_escape($name) . ($jush == "pgsql" ? $on : "");
 		$location = ME . "table=" . urlencode($TABLE);
-		if ($_POST["drop"]) {
+		if (isset($_POST["drop"]) && $_POST["drop"]) {
 			query_redirect($drop, $location, lang('Trigger has been dropped.'));
 		} else {
 			if ($name != "") {
@ -34,10 +34,10 @@ page_header(($name != "" ? lang('Alter trigger') . ": " . h($name) : lang('Creat

 <form action="" method="post" id="form">
 <table cellspacing="0" class="layout">
-<tr><th><?php echo lang('Time'); ?><td><?php echo html_select("Timing", $trigger_options["Timing"], $row["Timing"], "triggerChange(/^" . preg_quote($TABLE, "/") . "_[ba][iud]$/, '" . js_escape($TABLE) . "', this.form);"); ?>
-<tr><th><?php echo lang('Event'); ?><td><?php echo html_select("Event", $trigger_options["Event"], $row["Event"], "this.form['Timing'].onchange();"); ?>
-<?php echo (in_array("UPDATE OF", $trigger_options["Event"]) ? " <input name='Of' value='" . h($row["Of"]) . "' class='hidden'>": ""); ?>
-<tr><th><?php echo lang('Type'); ?><td><?php echo html_select("Type", $trigger_options["Type"], $row["Type"]); ?>
+<tr><th><?php echo lang('Time'); ?><td><?php echo html_select("Timing", isset($trigger_options["Timing"]) ? $trigger_options["Timing"] : null, isset($row["Timing"]) ? $row["Timing"] : null, "triggerChange(/^" . preg_quote($TABLE, "/") . "_[ba][iud]$/, '" . js_escape($TABLE) . "', this.form);"); ?>
+<tr><th><?php echo lang('Event'); ?><td><?php echo html_select("Event", isset($trigger_options["Event"]) ? $trigger_options["Event"] : null, isset($row["Event"]) ? $row["Event"] : null, "this.form['Timing'].onchange();"); ?>
+<?php echo (in_array("UPDATE OF", $trigger_options["Event"]) ? " <input name='Of' value='" . h(isset($row["Of"]) ? $row["Of"] : null) . "' class='hidden'>": ""); ?>
+<tr><th><?php echo lang('Type'); ?><td><?php echo html_select("Type", isset($trigger_options["Type"]) ? $trigger_options["Type"] : null, isset($row["Type"]) ? $row["Type"] : null); ?>
 </table>
 <p><?php echo lang('Name'); ?>: <input name="Trigger" value="<?php echo h($row["Trigger"]); ?>" data-maxlength="64" autocapitalize="off">
 <?php echo script("qs('#form')['Timing'].onchange();"); ?>
--- a/changes.txt
+++ b/changes.txt
@ -1,16 +1,4 @@
-Adminer 4.8.4 (released 2024-04-07):
-Removed size for integer on MySQL 8+
-Replaced deprecated by error_get_last()
-Allow responsive styles on larger devices (PR #75)
-Fixed issue with editor tables list
-Adjusted href of editor title
-Fixes of warnings on PHP8.3
-Filter removal buttons on table select pages (PR #77)
-Skip dump of generated columns (PR #95)
-Add LICENSE file, clarify dual-licensing (PR #122)
-Restore latest version check (PR #129)
-
-Adminer 4.8.3 (released 2023-10-05):
+Adminer 4.8.3 (released 2023-10-xx):
 Added some translations to russian language (PR #31)
 Better URL detection (PR #33)
 Main logo SVG, improved theme compatibility, RTL support (PR #34)
--- a/compile.php
+++ b/compile.php
@ -1,13 +1,13 @@
 #!/usr/bin/env php
 <?php
-function adminer_errors($errno, $errstr) {
-	return !!preg_match('~^(Trying to access array offset on value of type null|Undefined array key)~', $errstr);
+function adminer_errors($errNo, $errStr, $errFile, $errLine) {
+	file_put_contents("php://stderr", sprintf("%d - %s - %s:%d\n", $errNo, $errStr, $errFile, $errLine));
 }

 error_reporting(6135); // errors and warnings
 set_error_handler('adminer_errors', E_WARNING);
 include dirname(__FILE__) . "/adminer/include/version.inc.php";
-include dirname(__FILE__) . "/externals/JsShrink/jsShrink.php";
+include dirname(__FILE__) . "/vendor/vrana/jsshrink/jsShrink.php";

 function add_apo_slashes($s) {
 	return addcslashes($s, "\\'");
@ -37,7 +37,7 @@ function lang_ids($match) {
 	if ($lang_id === null) {
 		$lang_id = count($lang_ids) - 1;
 	}
-	return ($_SESSION["lang"] ? $match[0] : "lang($lang_id$match[2]");
+	return (isset($_SESSION["lang"]) && $_SESSION["lang"] ? $match[0] : "lang($lang_id$match[2]");
 }

 function put_file($match) {
@ -64,7 +64,7 @@ header("Cache-Control: immutable");
 	if ($driver && dirname($match[2]) == "../adminer/drivers") {
 		$return = preg_replace('~^if \(isset\(\$_GET\["' . $driver . '"]\)\) \{(.*)^}~ms', '\1', $return);
 	}
-	if (basename($match[2]) != "lang.inc.php" || !$_SESSION["lang"]) {
+	if (basename($match[2]) != "lang.inc.php" || isset($_SESSION["lang"]) === false || !$_SESSION["lang"]) {
 		$return = str_replace('<?php echo $GLOBALS[\'project\']; ?>', $project, $return);
 		if (basename($match[2]) == "lang.inc.php") {
 			$return = str_replace('function lang($idf, $number = null) {', 'function lang($idf, $number = null) {
@ -109,13 +109,15 @@ function lzw_compress($string) {
 	$word = "";
 	$codes = array();
 	for ($i=0; $i <= strlen($string); $i++) {
-		$x = @$string[$i];
-		if (strlen($x) && isset($dictionary[$word . $x])) {
-			$word .= $x;
-		} elseif ($i) {
-			$codes[] = $dictionary[$word];
-			$dictionary[$word . $x] = count($dictionary);
-			$word = $x;
+		if (isset($string[$i])) {
+			$x = $string[$i];
+			if (strlen($x) && isset($dictionary[$word . $x])) {
+				$word .= $x;
+			} elseif ($i) {
+				$codes[] = $dictionary[$word];
+				$dictionary[$word . $x] = count($dictionary);
+				$word = $x;
+			}
 		}
 	}
 	// convert codes to binary string
@ -142,7 +144,7 @@ function lzw_compress($string) {

 function put_file_lang($match) {
 	global $lang_ids, $project, $langs;
-	if ($_SESSION["lang"]) {
+	if (isset($_SESSION["lang"]) && $_SESSION["lang"]) {
 		return "";
 	}
 	$return = "";
@ -151,7 +153,9 @@ function put_file_lang($match) {
 		$translation_ids = array_flip($lang_ids); // default translation
 		foreach ($translations as $key => $val) {
 			if ($val !== null) {
-				$translation_ids[$lang_ids[$key]] = implode("\t", (array) $val);
+				if (isset($lang_ids[$key])) {
+					$translation_ids[$lang_ids[$key]] = implode("\t", (array) $val);
+				}
 			}
 		}
 		$return .= '
@ -227,7 +231,11 @@ function php_shrink($input) {

 	foreach ($tokens as $i => $token) {
 		if ($token[0] === T_VARIABLE && !isset($special_variables[$token[1]])) {
-			$short_variables[$token[1]]++;
+			if (isset($short_variables[$token[1]]) === false) {
+				$short_variables[$token[1]] = 1;
+			} else {
+				$short_variables[$token[1]]++;
+			}
 		}
 	}

@ -251,8 +259,7 @@ function php_shrink($input) {
 		if (!is_array($token)) {
 			$token = array(0, $token);
 		}
-		if (!is_null($tokens[$i+2])
-			&& $tokens[$i+2][0] === T_CLOSE_TAG && $tokens[$i+3][0] === T_INLINE_HTML && $tokens[$i+4][0] === T_OPEN_TAG
+		if (isset($tokens[$i+2][0]) && $tokens[$i+2][0] === T_CLOSE_TAG && isset($tokens[$i+3][0]) && $tokens[$i+3][0] === T_INLINE_HTML && isset($tokens[$i+4][0]) && $tokens[$i+4][0] === T_OPEN_TAG
 			&& strlen(add_apo_slashes($tokens[$i+3][1])) < strlen($tokens[$i+3][1]) + 3
 		) {
 			$tokens[$i+2] = array(T_ECHO, 'echo');
@ -313,7 +320,14 @@ function minify_js($file) {
 function compile_file($match) {
 	global $project;
 	$file = "";
-	list(, $filenames, $callback) = $match;
+	$filenames = null;
+	if (isset($match[1])) {
+		$filenames = $match[1];
+	}
+	$callback = null;
+	if (isset($match[2])) {
+		$callback = $match[2];
+	}
 	if ($filenames != "") {
 		foreach (explode(";", $filenames) as $filename) {
 			$file .= file_get_contents(dirname(__FILE__) . "/$project/$filename");
@ -348,26 +362,28 @@ function ini_bool($ini) {


 $project = "adminer";
-if ($_SERVER["argv"][1] == "editor") {
+if (isset($_SERVER["argv"][1]) && $_SERVER["argv"][1] == "editor") {
 	$project = "editor";
 	array_shift($_SERVER["argv"]);
 }

 $driver = "";
-if (file_exists(dirname(__FILE__) . "/adminer/drivers/" . $_SERVER["argv"][1] . ".inc.php")) {
+if (isset($_SERVER["argv"][1]) && file_exists(dirname(__FILE__) . "/adminer/drivers/" . $_SERVER["argv"][1] . ".inc.php")) {
 	$driver = $_SERVER["argv"][1];
 	array_shift($_SERVER["argv"]);
 }

 unset($_COOKIE["adminer_lang"]);
-$_SESSION["lang"] = $_SERVER["argv"][1]; // Adminer functions read language from session
+if (isset($_SERVER["argv"][1])) {
+	$_SESSION["lang"] = $_SERVER["argv"][1]; // Adminer functions read language from session
+}
 include dirname(__FILE__) . "/adminer/include/lang.inc.php";
-if (isset($langs[$_SESSION["lang"]])) {
+if (isset($_SESSION["lang"]) && isset($langs[$_SESSION["lang"]])) {
 	include dirname(__FILE__) . "/adminer/lang/$_SESSION[lang].inc.php";
 	array_shift($_SERVER["argv"]);
 }

-if ($_SERVER["argv"][1]) {
+if (isset($_SERVER["argv"][1]) && $_SERVER["argv"][1]) {
 	echo "Usage: php compile.php [editor] [driver] [lang]\n";
 	echo "Purpose: Compile adminer[-driver][-lang].php or editor[-driver][-lang].php.\n";
 	exit(1);
@ -427,7 +443,7 @@ if ($driver) {
 	if (count($drivers) == 1) {
 		$file = str_replace('<?php echo html_select("auth[driver]", $drivers, DRIVER) . "\n"; ?>', "<input type='hidden' name='auth[driver]' value='" . ($driver == "mysql" ? "server" : $driver) . "'>" . reset($drivers), $file);
 	}
-	$file = preg_replace('(;../externals/jush/modules/jush-(?!textarea\.|txt\.|js\.|' . preg_quote($driver == "mysql" ? "sql" : $driver) . '\.)[^.]+.js)', '', $file);
+	$file = preg_replace('(;../vendor/vrana/jush/modules/jush-(?!textarea\.|txt\.|js\.|' . preg_quote($driver == "mysql" ? "sql" : $driver) . '\.)[^.]+.js)', '', $file);
 	$file = preg_replace_callback('~doc_link\(array\((.*)\)\)~sU', function ($match) use ($driver) {
 		list(, $links) = $match;
 		$links = preg_replace("~'(?!(" . ($driver == "mysql" ? "sql|mariadb" : $driver) . ")')[^']*' => [^,]*,?~", '', $links);
@ -436,30 +452,30 @@ if ($driver) {
 	//! strip doc_link() definition
 }
 if ($project == "editor") {
-	$file = preg_replace('~;.\.\/externals/jush/jush\.css~', '', $file);
-	$file = preg_replace('~compile_file\(\'\.\./(externals/jush/modules/jush\.js|adminer/static/[^.]+\.gif)[^)]+\)~', "''", $file);
+	$file = preg_replace('~;.\.\/vendor/vrana/jush/jush\.css~', '', $file);
+	$file = preg_replace('~compile_file\(\'\.\./(vendor/vrana/jush/modules/jush\.js|adminer/static/[^.]+\.gif)[^)]+\)~', "''", $file);
 }
 $file = preg_replace_callback("~lang\\('((?:[^\\\\']+|\\\\.)*)'([,)])~s", 'lang_ids', $file);
 $file = preg_replace_callback('~\b(include|require) "([^"]*\$LANG.inc.php)";~', 'put_file_lang', $file);
 $file = str_replace("\r", "", $file);
-if ($_SESSION["lang"]) {
+if (isset($_SESSION["lang"]) && $_SESSION["lang"]) {
 	// single language version
 	$file = preg_replace_callback("~(<\\?php\\s*echo )?lang\\('((?:[^\\\\']+|\\\\.)*)'([,)])(;\\s*\\?>)?~s", 'remove_lang', $file);
 	$file = str_replace("<?php switch_lang(); ?>\n", "", $file);
 	$file = str_replace('<?php echo $LANG; ?>', $_SESSION["lang"], $file);
 }
 $file = str_replace('<?php echo script_src("static/editing.js"); ?>' . "\n", "", $file);
-$file = preg_replace('~\s+echo script_src\("\.\./externals/jush/modules/jush-(textarea|txt|js|\$jush)\.js"\);~', '', $file);
-$file = str_replace('<link rel="stylesheet" type="text/css" href="../externals/jush/jush.css">' . "\n", "", $file);
+$file = preg_replace('~\s+echo script_src\("\.\./vendor/vrana/jush/modules/jush-(textarea|txt|js|\$jush)\.js"\);~', '', $file);
+$file = str_replace('<link rel="stylesheet" type="text/css" href="../vendor/vrana/jush/jush.css">' . "\n", "", $file);
 $file = preg_replace_callback("~compile_file\\('([^']+)'(?:, '([^']*)')?\\)~", 'compile_file', $file); // integrate static files
 $replace = 'preg_replace("~\\\\\\\\?.*~", "", ME) . "?file=\1&version=' . $VERSION . '"';
 $file = preg_replace('~\.\./adminer/static/(default\.css|favicon\.ico)~', '<?php echo h(' . $replace . '); ?>', $file);
 $file = preg_replace('~"\.\./adminer/static/(functions\.js)"~', $replace, $file);
 $file = preg_replace('~\.\./adminer/static/([^\'"]*)~', '" . h(' . $replace . ') . "', $file);
-$file = preg_replace('~"\.\./externals/jush/modules/(jush\.js)"~', $replace, $file);
+$file = preg_replace('~"\.\./vendor/vrana/jush/modules/(jush\.js)"~', $replace, $file);
 $file = preg_replace("~<\\?php\\s*\\?>\n?|\\?>\n?<\\?php~", '', $file);
 $file = php_shrink($file);

-$filename = $project . (preg_match('~-dev$~', $VERSION) ? "" : "-$VERSION") . ($driver ? "-$driver" : "") . ($_SESSION["lang"] ? "-$_SESSION[lang]" : "") . ".php";
+$filename = $project . (preg_match('~-dev$~', $VERSION) ? "" : "-$VERSION") . ($driver ? "-$driver" : "") . (isset($_SESSION["lang"]) && $_SESSION["lang"] ? "-$_SESSION[lang]" : "") . ".php";
 file_put_contents($filename, $file);
 echo "$filename created (" . strlen($file) . " B).\n";
--- a/composer.json
+++ b/composer.json
@ -1,14 +1,13 @@
 {
-    "name": "vrana/adminer",
+    "name": "adminerevo/adminerevo",
    "description": "Database management in a single PHP file.",
-    "homepage": "https://www.adminer.org/",
+    "homepage": "https://www.adminerevo.org/",
    "keywords": [
        "database"
    ],
    "support": {
-        "issues": "https://sourceforge.net/p/adminer/bugs-and-features/",
-        "forum": "https://sourceforge.net/p/adminer/discussion/",
-        "source": "https://github.com/vrana/adminer/"
+        "issues": "https://github.com/adminerevo/adminerevo/issues/",
+        "source": "https://github.com/adminerevo/adminerevo/"
    },
    "authors": [
        {
@ -27,5 +26,19 @@
    ],
    "scripts": {
        "compile": "php compile.php"
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/vrana/jush.git"
+        },
+        {
+            "type": "vcs",
+            "url": "https://github.com/vrana/jsshrink.git"
+        }
+    ],
+    "require": {
+        "vrana/jush": "dev-master#ae33623c66189375a3654954cddc1c73f65c36fa",
+        "vrana/jsshrink": "dev-master#96a466fa4cef74ba8362f4bc4b1bb17b2c9ecbcc"
    }
 }
--- a/composer.lock
+++ b/composer.lock
@ -0,0 +1,105 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "07c328449153caaf58dca2fa394054e3",
+    "packages": [
+        {
+            "name": "vrana/jsshrink",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/vrana/JsShrink.git",
+                "reference": "96a466fa4cef74ba8362f4bc4b1bb17b2c9ecbcc"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/vrana/JsShrink/zipball/96a466fa4cef74ba8362f4bc4b1bb17b2c9ecbcc",
+                "reference": "96a466fa4cef74ba8362f4bc4b1bb17b2c9ecbcc",
+                "shasum": ""
+            },
+            "default-branch": true,
+            "type": "library",
+            "extra": {
+                "component": {
+                    "scripts": [
+                        "jsShrink.js"
+                    ]
+                }
+            },
+            "autoload": {
+                "files": [
+                    "jsShrink.js"
+                ]
+            },
+            "license": [
+                "Apache-2.0",
+                "GPL-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Jakub Vrána",
+                    "homepage": "http://www.vrana.cz"
+                }
+            ],
+            "description": "Remove spaces and comments from JavaScript code (available in PHP and JavaScript).",
+            "homepage": "https://github.com/vrana/JsShrink",
+            "support": {
+                "source": "https://github.com/vrana/JsShrink/tree/master",
+                "issues": "https://github.com/vrana/JsShrink/issues"
+            },
+            "time": "2014-10-25T23:40:07+00:00"
+        },
+        {
+            "name": "vrana/jush",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/vrana/jush.git",
+                "reference": "ae33623c66189375a3654954cddc1c73f65c36fa"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/vrana/jush/zipball/ae33623c66189375a3654954cddc1c73f65c36fa",
+                "reference": "ae33623c66189375a3654954cddc1c73f65c36fa",
+                "shasum": ""
+            },
+            "default-branch": true,
+            "type": "library",
+            "license": [
+                "Apache-2.0",
+                "GPL-2.0-only"
+            ],
+            "authors": [
+                {
+                    "name": "Jakub Vrána",
+                    "homepage": "https://www.vrana.cz/"
+                }
+            ],
+            "description": "JUSH - JavaScript Syntax Highlighter",
+            "homepage": "http://jush.sourceforge.net/",
+            "keywords": [
+                "javascript",
+                "syntax highlighter"
+            ],
+            "support": {
+                "source": "https://github.com/vrana/jush/"
+            },
+            "time": "2021-02-06T15:06:41+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": {
+        "vrana/jush": 20,
+        "vrana/jsshrink": 20
+    },
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.6.0"
+}
--- a/designs/pepa-linha/adminer.css
+++ b/designs/pepa-linha/adminer.css
@ -193,7 +193,7 @@ legend a:link:hover {

 code {
 	/* background: none; */
-	padding: 3px 6px;
+    padding: 3px 6px;
 }

 p code,
@ -259,7 +259,7 @@ p code + a:visited:hover {
 	padding-top: 9px;
 	text-transform: lowercase;
 	margin: 25px 0 10px 16px;
-	border-top: none;
+    border-top: none;
 }

 #menu h1 a {
--- a/editor/db.inc.php
+++ b/editor/db.inc.php
@ -3,8 +3,8 @@ page_header(lang('Server'), "", false);

 if ($adminer->homepage()) {
 	echo "<form action='' method='post'>\n";
-	echo "<p>" . lang('Search data in tables') . ": <input type='search' name='query' value='" . h($_POST["query"]) . "'> <input type='submit' value='" . lang('Search') . "'>\n";
-	if ($_POST["query"] != "") {
+	echo "<p>" . lang('Search data in tables') . ": <input type='search' name='query' value='" . h(isset($_POST["query"]) ? $_POST["query"] : null) . "'> <input type='submit' value='" . lang('Search') . "'>\n";
+	if (isset($_POST["query"]) && $_POST["query"] != "") {
 		search_tables();
 	}
 	echo "<div class='scrollable'>\n";
@ -19,7 +19,7 @@ if ($adminer->homepage()) {
 	foreach (table_status() as $table => $row) {
 		$name = $adminer->tableName($row);
 		if (isset($row["Engine"]) && $name != "") {
-			echo '<tr' . odd() . '><td>' . checkbox("tables[]", $table, in_array($table, (array) $_POST["tables"], true));
+			echo '<tr' . odd() . '><td>' . checkbox("tables[]", $table, in_array($table, (array) (isset($_POST["tables"]) ? $_POST["tables"] : []), true));
 			echo "<th><a href='" . h(ME) . 'select=' . urlencode($table) . "'>$name</a>";
 			$val = format_number($row["Rows"]);
 			echo "<td align='right'><a href='" . h(ME . "edit=") . urlencode($table) . "'>" . ($row["Engine"] == "InnoDB" && $val ? "~ $val" : $val) . "</a>";
--- a/editor/include/adminer.inc.php
+++ b/editor/include/adminer.inc.php
@ -72,11 +72,11 @@ class Adminer {

 	function loginForm() {
 		echo "<table cellspacing='0' class='layout'>\n";
-		echo $this->loginFormField('username', '<tr><th>' . lang('Username') . '<td>', '<input type="hidden" name="auth[driver]" value="server"><input name="auth[username]" id="username" value="' . h($_GET["username"]) . '" autocomplete="username" autocapitalize="off">' . script("focus(qs('#username'));"));
+		echo $this->loginFormField('username', '<tr><th>' . lang('Username') . '<td>', '<input type="hidden" name="auth[driver]" value="server"><input name="auth[username]" id="username" value="' . h((isset($_GET["username"]) ? $_GET["username"] : null)) . '" autocomplete="username" autocapitalize="off">' . script("focus(qs('#username'));"));
 		echo $this->loginFormField('password', '<tr><th>' . lang('Password') . '<td>', '<input type="password" name="auth[password]" autocomplete="current-password">' . "\n");
 		echo "</table>\n";
 		echo "<p><input type='submit' value='" . lang('Login') . "'>\n";
-		echo checkbox("auth[permanent]", 1, $_COOKIE["adminer_permanent"], lang('Permanent login')) . "\n";
+		echo checkbox("auth[permanent]", 1, (isset($_COOKIE["adminer_permanent"]) ? $_COOKIE["adminer_permanent"] : null), lang('Permanent login')) . "\n";
 	}

 	function loginFormField($name, $heading, $value) {
@ -224,7 +224,7 @@ ORDER BY ORDINAL_POSITION", null, "") as $row) { //! requires MySQL 5
 	}

 	function selectSearchPrint($where, $columns, $indexes) {
-		$where = (array) $_GET["where"];
+		$where = isset($_GET["where"]) ? (array) $_GET["where"] : [];
 		echo '<fieldset id="fieldset-search"><legend>' . lang('Search') . "</legend><div>\n";
 		$keys = array();
 		foreach ($where as $key => $val) {
@ -293,7 +293,7 @@ ORDER BY ORDINAL_POSITION", null, "") as $row) { //! requires MySQL 5
 			echo "<select name='index_order'>" . optionlist(array("" => "") + $orders, ($_GET["order"][0] != "" ? "" : $_GET["index_order"]), true) . "</select>";
 			echo "</div></fieldset>\n";
 		}
-		if ($_GET["order"]) {
+		if (isset($_GET["order"]) && $_GET["order"]) {
 			echo "<div style='display: none;'>" . hidden_fields(array(
 				"order" => array(1 => reset($_GET["order"])),
 				"desc" => ($_GET["desc"] ? array(1 => 1) : array()),
@ -326,13 +326,13 @@ ORDER BY ORDINAL_POSITION", null, "") as $row) { //! requires MySQL 5

 	function selectEmailPrint($emailFields, $columns) {
 		if ($emailFields) {
-			print_fieldset("email", lang('E-mail'), $_POST["email_append"]);
+			print_fieldset("email", lang('E-mail'), isset($_POST["email_append"]) ? $_POST["email_append"] : null);
 			echo "<div>";
 			echo script("qsl('div').onkeydown = partialArg(bodyKeydown, 'email');");
-			echo "<p>" . lang('From') . ": <input name='email_from' value='" . h($_POST ? $_POST["email_from"] : $_COOKIE["adminer_email"]) . "'>\n";
-			echo lang('Subject') . ": <input name='email_subject' value='" . h($_POST["email_subject"]) . "'>\n";
-			echo "<p><textarea name='email_message' rows='15' cols='75'>" . h($_POST["email_message"] . ($_POST["email_append"] ? '{$' . "$_POST[email_addition]}" : "")) . "</textarea>\n";
-			echo "<p>" . script("qsl('p').onkeydown = partialArg(bodyKeydown, 'email_append');", "") . html_select("email_addition", $columns, $_POST["email_addition"]) . "<input type='submit' name='email_append' value='" . lang('Insert') . "'>\n"; //! JavaScript
+			echo "<p>" . lang('From') . ": <input name='email_from' value='" . h(isset($_POST["email_from"]) ? $_POST["email_from"] : (isset($_COOKIE["adminer_email"]) ? $_COOKIE["adminer_email"] : null)) . "'>\n";
+			echo lang('Subject') . ": <input name='email_subject' value='" . h(isset($_POST["email_subject"]) ? $_POST["email_subject"] : null) . "'>\n";
+			echo "<p><textarea name='email_message' rows='15' cols='75'>" . h(isset($_POST["email_message"]) ? $_POST["email_message"] : null . (isset($_POST["email_append"]) && $_POST["email_append"] ? '{$' . "$_POST[email_addition]}" : "")) . "</textarea>\n";
+			echo "<p>" . script("qsl('p').onkeydown = partialArg(bodyKeydown, 'email_append');", "") . html_select("email_addition", $columns, isset($_POST["email_addition"]) ? $_POST["email_addition"] : null) . "<input type='submit' name='email_append' value='" . lang('Insert') . "'>\n"; //! JavaScript
 			echo "<p>" . lang('Attachments') . ": <input type='file' name='email_files[]'>" . script("qsl('input').onchange = emailFileChange;");
 			echo "<p>" . (count($emailFields) == 1 ? '<input type="hidden" name="email_field" value="' . h(key($emailFields)) . '">' : html_select("email_field", $emailFields));
 			echo "<input type='submit' name='email' value='" . lang('Send') . "'>" . confirm();
@ -348,43 +348,45 @@ ORDER BY ORDINAL_POSITION", null, "") as $row) { //! requires MySQL 5
 	function selectSearchProcess($fields, $indexes) {
 		global $driver;
 		$return = array();
-		foreach ((array) $_GET["where"] as $key => $where) {
-			$col = $where["col"];
-			$op = $where["op"];
-			$val = $where["val"];
-			if (($key < 0 ? "" : $col) . $val != "") {
-				$conds = array();
-				foreach (($col != "" ? array($col => $fields[$col]) : $fields) as $name => $field) {
-					if ($col != "" || is_numeric($val) || !preg_match(number_type(), $field["type"])) {
-						$name = idf_escape($name);
-						if ($col != "" && $field["type"] == "enum") {
-							$conds[] = (in_array(0, $val) ? "$name IS NULL OR " : "") . "$name IN (" . implode(", ", array_map('intval', $val)) . ")";
-						} else {
-							$text_type = preg_match('~char|text|enum|set~', $field["type"]);
-							$value = $this->processInput($field, (!$op && $text_type && preg_match('~^[^%]+$~', $val) ? "%$val%" : $val));
-							$conds[] = $driver->convertSearch($name, $val, $field) . ($value == "NULL" ? " IS" . ($op == ">=" ? " NOT" : "") . " $value"
-								: (in_array($op, $this->operators) || $op == "=" ? " $op $value"
-								: ($text_type ? " LIKE $value"
-								: " IN (" . str_replace(",", "', '", $value) . ")"
-							)));
-							if ($key < 0 && $val == "0") {
-								$conds[] = "$name IS NULL";
+		if (isset($_GET["where"])) {
+			foreach ((array) $_GET["where"] as $key => $where) {
+				$col = $where["col"];
+				$op = $where["op"];
+				$val = $where["val"];
+				if (($key < 0 ? "" : $col) . $val != "") {
+					$conds = array();
+					foreach (($col != "" ? array($col => $fields[$col]) : $fields) as $name => $field) {
+						if ($col != "" || is_numeric($val) || !preg_match(number_type(), $field["type"])) {
+							$name = idf_escape($name);
+							if ($col != "" && $field["type"] == "enum") {
+								$conds[] = (in_array(0, $val) ? "$name IS NULL OR " : "") . "$name IN (" . implode(", ", array_map('intval', $val)) . ")";
+							} else {
+								$text_type = preg_match('~char|text|enum|set~', $field["type"]);
+								$value = $this->processInput($field, (!$op && $text_type && preg_match('~^[^%]+$~', $val) ? "%$val%" : $val));
+								$conds[] = $driver->convertSearch($name, $val, $field) . ($value == "NULL" ? " IS" . ($op == ">=" ? " NOT" : "") . " $value"
+									: (in_array($op, $this->operators) || $op == "=" ? " $op $value"
+									: ($text_type ? " LIKE $value"
+									: " IN (" . str_replace(",", "', '", $value) . ")"
+								)));
+								if ($key < 0 && $val == "0") {
+									$conds[] = "$name IS NULL";
+								}
 							}
 						}
 					}
+					$return[] = ($conds ? "(" . implode(" OR ", $conds) . ")" : "1 = 0");
 				}
-				$return[] = ($conds ? "(" . implode(" OR ", $conds) . ")" : "1 = 0");
 			}
 		}
 		return $return;
 	}

 	function selectOrderProcess($fields, $indexes) {
-		$index_order = $_GET["index_order"];
+		$index_order = isset($_GET["index_order"]) ? $_GET["index_order"] : null;
 		if ($index_order != "") {
 			unset($_GET["order"][1]);
 		}
-		if ($_GET["order"]) {
+		if (isset($_GET["order"]) && $_GET["order"]) {
 			return array(idf_escape(reset($_GET["order"])) . ($_GET["desc"] ? " DESC" : ""));
 		}
 		foreach (($index_order != "" ? array($indexes[$index_order]) : $indexes) as $index) {
@ -416,10 +418,10 @@ ORDER BY ORDINAL_POSITION", null, "") as $row) { //! requires MySQL 5
 	}

 	function selectEmailProcess($where, $foreignKeys) {
-		if ($_POST["email_append"]) {
+		if (isset($_POST["email_append"]) && $_POST["email_append"]) {
 			return true;
 		}
-		if ($_POST["email"]) {
+		if (isset($_POST["email"]) && $_POST["email"]) {
 			$sent = 0;
 			if ($_POST["all"] || $_POST["check"]) {
 				$field = idf_escape($_POST["email_field"]);
@ -478,30 +480,9 @@ ORDER BY ORDINAL_POSITION", null, "") as $row) { //! requires MySQL 5

 	function editInput($table, $field, $attrs, $value) {
 		if ($field["type"] == "enum") {
-			$options = array();
-			$selected = $value;
-			if (isset($_GET["select"])) {
-				$options[-1] = lang('original');
-				if ($selected === null) {
-					$selected = -1;
-				}
-			}
-			if ($field["null"]) {
-				$options[""] = "NULL";
-				if ($value === null && !isset($_GET["select"])) {
-					$selected = "";
-				}
-			}
-			$options[0] = lang('empty');
-			preg_match_all("~'((?:[^']|'')*)'~", $field["length"], $matches);
-			foreach ($matches[1] as $i => $val) {
-				$val = stripcslashes(str_replace("''", "'", $val));
-				$options[$i + 1] = $val;
-				if ($value === $val) {
-					$selected = $i + 1;
-				}
-			}
-			return "<select$attrs>" . optionlist($options, (string) $selected, 1) . "</select>"; // 1 - use keys
+			return (isset($_GET["select"]) ? "<label><input type='radio'$attrs value='-1' checked><i>" . lang('original') . "</i></label> " : "")
+				. enum_input("radio", $attrs, $field, ($value || isset($_GET["select"]) ? $value : 0), ($field["null"] ? "" : null))
+			;
 		}
 		$options = $this->_foreignKeyOptions($table, $field["field"], $value);
 		if ($options !== null) {
@ -612,15 +593,17 @@ qsl('div').onclick = whisperClick;", "")
 <?php
 		if ($missing == "auth") {
 			$first = true;
-			foreach ((array) $_SESSION["pwds"] as $vendor => $servers) {
-				foreach ($servers[""] as $username => $password) {
-					if ($password !== null) {
-						if ($first) {
-							echo "<ul id='logins'>";
-							echo script("mixin(qs('#logins'), {onmouseover: menuOver, onmouseout: menuOut});");
-							$first = false;
+			if (isset($_SESSION["pwds"])) {
+				foreach ((array) $_SESSION["pwds"] as $vendor => $servers) {
+					foreach ($servers[""] as $username => $password) {
+						if ($password !== null) {
+							if ($first) {
+								echo "<ul id='logins'>";
+								echo script("mixin(qs('#logins'), {onmouseover: menuOver, onmouseout: menuOut});");
+								$first = false;
+							}
+							echo "<li><a href='" . h(auth_url($vendor, "", $username)) . "'>" . ($username != "" ? h($username) : "<i>" . lang('empty') . "</i>") . "</a>\n";
 						}
-						echo "<li><a href='" . h(auth_url($vendor, "", $username)) . "'>" . ($username != "" ? h($username) : "<i>" . lang('empty') . "</i>") . "</a>\n";
 					}
 				}
 			}
@ -648,10 +631,10 @@ qsl('div').onclick = whisperClick;", "")
 			$name = $this->tableName($row);
 			if (isset($row["Engine"]) && $name != "") { // ignore views and tables without name
 				echo "<a href='" . h(ME) . 'select=' . urlencode($row["Name"]) . "'"
-					. bold($_GET["select"] == $row["Name"] || $_GET["edit"] == $row["Name"], "select")
+					. bold((isset($_GET["select"]) && $_GET["select"] == $row["Name"]) || (isset($_GET["edit"]) && $_GET["edit"] == $row["Name"]), "select")
 					. " title='" . lang('Select data') . "'>$name</a>\n";
 				echo "<a href='" . h(ME) . 'select=' . urlencode($row["Name"]) . "'"
-					. bold($_GET["select"] == $row["Name"] || $_GET["edit"] == $row["Name"], "")
+					. bold((isset($_GET["select"]) && $_GET["select"] == $row["Name"]) || (isset($_GET["edit"]) && $_GET["edit"] == $row["Name"]), "")
 					. " title='" . lang('Select data') . "'>$name</a>\n";
 			}
 		}
@ -659,12 +642,14 @@ qsl('div').onclick = whisperClick;", "")
 	}

 	function _foreignColumn($foreignKeys, $column) {
-		foreach ((array) $foreignKeys[$column] as $foreignKey) {
-			if (count($foreignKey["source"]) == 1) {
-				$name = $this->rowDescription($foreignKey["table"]);
-				if ($name != "") {
-					$id = idf_escape($foreignKey["target"][0]);
-					return array($foreignKey["table"], $id, $name);
+		if (isset($foreignKeys[$column])) {
+			foreach ((array) $foreignKeys[$column] as $foreignKey) {
+				if (count($foreignKey["source"]) == 1) {
+					$name = $this->rowDescription($foreignKey["table"]);
+					if ($name != "") {
+						$id = idf_escape($foreignKey["target"][0]);
+						return array($foreignKey["table"], $id, $name);
+					}
 				}
 			}
 		}
--- a/editor/index.php
+++ b/editor/index.php
@ -11,7 +11,7 @@ $GLOBALS['project'] = basename(dirname(__FILE__));
 include "../adminer/include/bootstrap.inc.php";
 $drivers[DRIVER] = lang('Login');

-if (isset($_GET["select"]) && ($_POST["edit"] || $_POST["clone"]) && !$_POST["save"]) {
+if (isset($_GET["select"]) && ((isset($_POST["edit"]) && $_POST["edit"]) || (isset($_POST["clone"]) && $_POST["clone"])) && (isset($_POST["save"]) === false || !$_POST["save"])) {
 	$_GET["edit"] = $_GET["select"];
 }

--- a/externals/JsShrink
+++ b/externals/JsShrink
@ -1 +0,0 @@
-Subproject commit 17cbfacae67dede6d94d94ce92214c8ca31d858e
--- a/externals/jush
+++ b/externals/jush
@ -1 +0,0 @@
-Subproject commit ae33623c66189375a3654954cddc1c73f65c36fa
--- a/plugins/enum-option.php
+++ b/plugins/enum-option.php
@ -5,10 +5,9 @@
 * @author Jakub Vrana, https://www.vrana.cz/
 * @license https://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 * @license https://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
-* @depreacted 4.8.4 is now default behavior
 */
 class AdminerEnumOption {
-
+	
 	function editInput($table, $field, $attrs, $value) {
 		if ($field["type"] == "enum") {
 			$options = array();
@ -37,5 +36,5 @@ class AdminerEnumOption {
 			return "<select$attrs>" . optionlist($options, (string) $selected, 1) . "</select>"; // 1 - use keys
 		}
 	}
-
+	
 }
--- a/readme.md
+++ b/readme.md
@ -3,26 +3,19 @@
 **Adminer** - Database management in a single PHP file  
 **Adminer Editor** - Data manipulation for end-users

-## A bit of history
+### A bit of history

 The original Adminer was created and maintained by Jakub Vrána in the [vrana/adminer](https://github.com/vrana/adminer) repository.
 Not being maintained for more than two years and being a daily user of Adminer, I've tried to get in touch with the original developer to propose my help to continue the project, but without success, I got no answer.
 I have then started to search if someone would be interested in continuing the project with me and found someone who seemed to have the same interest and view on the future of this project.
 I am now starting to take over the project under a slightly different name and will try to keep compatibility with all current database engines but also to give Adminer a new features, layout, etc.

-## Before participating
+### Before participating

 Before you start developing around AdminerEvo, please carefully read the roadmap, the status of open issues, and even get in touch with us.
 It would be sad spending time/energy on development of a feature which would not be accepted into the main project.

-## License
-
-This work is dual-licensed under Apache 2.0 and GPL 2.0.
-You can choose between either one of them if you use this work.
-
-`SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-only`
-
-## Information from the original developer
+### Information from the original developer

 |||
 |---|---|
--- a/todo.txt
+++ b/todo.txt
@ -20,6 +20,7 @@ Joining tables - PRIMARY KEY (table, joining)
 Rank, Tree structure

 MySQL:
+Generated columns (MySQL >= 5.7.6)
 Data longer than max_allowed_packet can be sent by mysqli_stmt_send_long_data()

 MariaDB:
Author	SHA1	Message	Date
Lionel Laffineur	00a9ae1148	Restored compatibility with PHP 5.6	2024-03-03 19:46:34 +01:00
Gerry Demaret	5020f92f18	Merge PR#102 from peterpp	2024-03-03 19:37:24 +01:00
Sneda8	6fcc2e7e51	PHP 8.3 error suppression PHP 8.3 has shortened the array access on null error message to "Trying to access array offset on null". This commit changes the regular expression used to circumvent errors.	2024-03-03 19:25:57 +01:00
Lionel Laffineur	c7111e52f4	I#104: logo white bg for dark mode	2024-03-03 19:25:57 +01:00
Gerry Demaret	b0c0dd4900	compile: replace submodules by composer repositories	2024-03-03 18:58:10 +01:00
Peter Knut	6aa64a63a5	Change 'Invalid credentials.' message	2024-01-26 10:25:59 +01:00
Peter Knut	95080c48f3	Validate server connection in SimpleDB driver	2024-01-26 10:09:42 +01:00
Peter Knut	eb69a942cb	Validate server connection in Elasticsearch and ClickHouse drivers	2024-01-26 10:09:42 +01:00
Peter Knut	23e7cdc0a3	Disable redirections in HTTP based drivers	2024-01-25 15:00:39 +01:00
Peter Knut	18f3167bbc	Validate server input - Allow only scheme, host and port in the server field. - Use proper default host and port in Elasticsearch and ClickHouse driver.	2024-01-25 14:58:57 +01:00
Lionel Laffineur	a72ce720c7	Fix warnings in compile.php	2023-12-25 20:22:14 +01:00
Lionel Laffineur	574e13cc4b	Fixed warnings related to Pgsql driver	2023-12-11 21:44:25 +01:00
Lionel Laffineur	4f4f2d3069	Fixed warnings of editor edit / save / clone / delete	2023-12-09 15:07:04 +01:00
Lionel Laffineur	8c361c74e9	Fixed warnings of editor login, tables list and data list pages	2023-12-06 23:00:08 +01:00
Lionel Laffineur	70b1080775	Fixed warnings of alter table	2023-12-04 22:03:59 +01:00
Lionel Laffineur	5f7daff1e0	Fixed warnings on table structure page and table data page	2023-12-03 23:04:42 +01:00
Lionel Laffineur	4deb8a4085	Fixed warnings on tables list page	2023-12-03 18:16:07 +01:00
Lionel Laffineur	c4038f46ee	Fixed warnings on login page	2023-12-03 17:39:39 +01:00
				`@ -1 +0,0 @@`
				`Subproject commit 17cbfacae67dede6d94d94ce92214c8ca31d858e`
				`@ -1 +0,0 @@`
				`Subproject commit ae33623c66189375a3654954cddc1c73f65c36fa`