forum_punbb_1_0_php8/include/dblayer/mysql.php

<?php
/***********************************************************************

  Copyright (C) 2002-2005  Rickard Andersson (rickard@punbb.org)

  This file is part of PunBB.

  PunBB is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published
  by the Free Software Foundation; either version 2 of the License,
  or (at your option) any later version.

  PunBB is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  MA  02111-1307  USA

************************************************************************/


// Make sure we have built in support for MySQL
if (!function_exists('mysqli_connect')) {
    exit('This PHP environment doesn\'t have Improved MySQL (mysqli) support built in. Improved MySQL support is required if you want to use a MySQL 4.1 (or later) database to run this forum. Consult the PHP documentation for further assistance.');
}

class DBLayer
{
    var $prefix;
    var $link_id;
    var $query_result;

    var $saved_queries = array();
    var $num_queries = 0;

    function __construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $foo)
    {
        $this->prefix = $db_prefix;

        // Was a custom port supplied with $db_host?
        if (strpos($db_host, ':') !== false) {
            list($db_host, $db_port) = explode(':', $db_host);
        }

        if (isset($db_port)) {
            $this->link_id = mysqli_connect($db_host, $db_username, $db_password, $db_name, null, $db_port);
        } else {
            $this->link_id = mysqli_connect($db_host, $db_username, $db_password, $db_name);
        }

        if (!$this->link_id) {
            error('Unable to connect to MySQL and select database. MySQL reported: '.mysqli_connect_error(), __FILE__, __LINE__);
        }
    }
		function start_transaction()
		{
		    return;
		}

		function end_transaction()
		{
		    return;
		}

		function query($sql, $unbuffered = false)
		{
		    if (defined('PUN_SHOW_QUERIES'))
		        $q_start = microtime(true);

            if (is_array($sql)) {
                $sql = implode(' ', $sql);
            }
            try {
                $this->query_result = mysqli_query($this->link_id, $sql, $unbuffered ? MYSQLI_USE_RESULT : MYSQLI_STORE_RESULT);
            } catch (mysqli_sql_exception $exception) {
                // handle the exception, such as logging it or displaying an error message
                echo 'Error: ' . $exception->getMessage();
            }

if (!$this->query_result) {
    die('Unable to execute query: ' . mysqli_error($this->link_id)); // Updated
}

		    if ($this->query_result)
		    {
		        if (defined('PUN_SHOW_QUERIES'))
		            $this->saved_queries[] = array($sql, sprintf('%.5f', microtime(true) - $q_start));

		        ++$this->num_queries;

		        return $this->query_result;
		    }
		    else
		    {
		        if (defined('PUN_SHOW_QUERIES'))
		            $this->saved_queries[] = array($sql, 0);

		        return false;
		    }
		}



		function result($query_id = 0, $row = 0)
		{
		    if ($query_id)
		    {
		        if ($row)
		            mysqli_data_seek($query_id, $row);
		        $cur_row = mysqli_fetch_row($query_id);
		        return $cur_row[0] ?? false;
		    }
		    else
		        return false;
		}

		function fetch_assoc($query_id = 0)
		{
		    return ($query_id) ? mysqli_fetch_assoc($query_id) : false;
		}

		function fetch_row($query_id = 0)
		{
		    return ($query_id) ? mysqli_fetch_row($query_id) : false;
		}

		function num_rows($query_id = 0)
		{
		    return ($query_id) ? mysqli_num_rows($query_id) : false;
		}


		function affected_rows()
		{
		return ($this->link_id) ? @mysqli_affected_rows($this->link_id) : false;
		}


		function insert_id()
		{
		return ($this->link_id) ? @mysqli_insert_id($this->link_id) : false;
		}


		function get_num_queries()
		{
		return $this->num_queries;
		}


		function get_saved_queries()
		{
		return $this->saved_queries;
		}


		function free_result($query_id = false)
		{
		return ($query_id) ? @mysqli_free_result($query_id) : false;
		}


		function escape($str)
		{
		  if ($str === null) {
		    return '';
		  }

		  return is_array($str) ? '' : mysqli_real_escape_string($this->link_id, $str);
		}



		function error2()
		{
		  $result['error_sql'] = @current(@end($this->saved_queries));
		  $result['error_no'] = @mysqli_errno($this->link_id);
		  $result['error_msg'] = @mysqli_error($this->link_id);

		  return $result;
		}


		function close()
	  {
		  if ($this->link_id)
		  {
			  if (is_a($this->query_result, 'mysqli_result'))
				  mysqli_free_result($this->query_result);

			  return mysqli_close($this->link_id);
		  }
		  else
			  return false;
	  }

}