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<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Clearbricks.
# Copyright (c) 2006 Olivier Meunier and contributors. All rights
# reserved.
#
# Clearbricks 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.
#
# Clearbricks 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 Clearbricks; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ***** END LICENSE BLOCK *****
/**
@ingroup CB_DBLAYER
@brief MySQL Database Driver.
See the dbLayer documentation for common methods.
*/
class mysqlConnection extends dbLayer implements i_dbLayer
{
protected $__driver = 'mysql';
public function db_connect($host,$user,$password,$database)
{
if (!function_exists('mysql_connect')) {
throw new Exception('PHP MySQL functions are not available');
}
if (($link = @mysql_connect($host,$user,$password)) === false) {
throw new Exception('Unable to connect to database');
}
$this->db_post_connect($link,$database);
return $link;
}
public function db_pconnect($host,$user,$password,$database)
{
if (!function_exists('mysql_pconnect')) {
throw new Exception('PHP MySQL functions are not available');
}
if (($link = @mysql_pconnect($host,$user,$password)) === false) {
throw new Exception('Unable to connect to database');
}
$this->db_post_connect($link,$database);
return $link;
}
private function db_post_connect($link,$database)
{
if (@mysql_select_db($database,$link) === false) {
throw new Exception('Unable to use database '.$database);
}
if (version_compare($this->db_version($link),'4.1','>='))
{
$this->db_query($link,'SET NAMES utf8');
$this->db_query($link,'SET CHARACTER SET utf8');
$this->db_query($link,"SET COLLATION_CONNECTION = 'utf8_general_ci'");
$this->db_query($link,"SET COLLATION_SERVER = 'utf8_general_ci'");
$this->db_query($link,"SET CHARACTER_SET_SERVER = 'utf8'");
$this->db_query($link,"SET CHARACTER_SET_DATABASE = 'utf8'");
}
}
public function db_close($handle)
{
if (is_resource($handle)) {
mysql_close($handle);
}
}
public function db_version($handle)
{
if (is_resource($handle)) {
return mysql_get_server_info();
}
return null;
}
public function db_query($handle,$query)
{
if (is_resource($handle))
{
$res = @mysql_query($query,$handle);
if ($res === false) {
$e = new Exception($this->db_last_error($handle));
$e->sql = $query;
throw $e;
}
return $res;
}
}
public function db_exec($handle,$query)
{
return $this->db_query($handle,$query);
}
public function db_num_fields($res)
{
if (is_resource($res)) {
return mysql_num_fields($res);
}
return 0;
}
public function db_num_rows($res)
{
if (is_resource($res)) {
return mysql_num_rows($res);
}
return 0;
}
public function db_field_name($res,$position)
{
if (is_resource($res)) {
return mysql_field_name($res,$position);
}
}
public function db_field_type($res,$position)
{
if (is_resource($res)) {
return mysql_field_type($res,$position);
}
}
public function db_fetch_assoc($res)
{
if (is_resource($res)) {
return mysql_fetch_assoc($res);
}
}
public function db_result_seek($res,$row)
{
if (is_resource($res)) {
return mysql_data_seek($res,$row);
}
}
public function db_changes($handle,$res)
{
if (is_resource($handle)) {
return mysql_affected_rows($handle);
}
}
public function db_last_error($handle)
{
if (is_resource($handle))
{
$e = mysql_error($handle);
if ($e) {
return $e.' ('.mysql_errno($handle).')';
}
}
return false;
}
public function db_escape_string($str,$handle=null)
{
if (is_resource($handle)) {
return mysql_real_escape_string($str,$handle);
} else {
return mysql_escape_string($str);
}
}
public function vacuum($table)
{
$this->execute('OPTIMIZE TABLE '.$this->escapeSystem($table));
}
public function dateFormat($field,$pattern)
{
$pattern = str_replace('%M','%i',$pattern);
return 'DATE_FORMAT('.$field.','."'".$this->escape($pattern)."') ";
}
public function concat()
{
$args = func_get_args();
return 'CONCAT('.implode(',',$args).')';
}
public function escapeSystem($str)
{
return '`'.$str.'`';
}
}
?>