source: branches/rsr.v5.1/web/punbb/include/dblayer/mysqli.php @ 7

<?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 DBLayer($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, $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 = get_microtime();

                $this->query_result = @mysqli_query($this->link_id, $sql);

                if ($this->query_result)
                {
                        if (defined('PUN_SHOW_QUERIES'))
                                $this->saved_queries[] = array($sql, sprintf('%.5f', get_microtime() - $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];
                }
                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($str)
        {
                return mysqli_real_escape_string($this->link_id, $str);
        }


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

                return $result;
        }


        function close()
        {
                if ($this->link_id)
                {
                        if ($this->query_result)
                                @mysqli_free_result($this->query_result);

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