[+] Add native MySQLi support

cache/class_index.php

@@ -76,6 +76,8 @@
   'DateRange' => 'override/classes/DateRange.php',
   'DbCore' => 'classes/Db.php',
   'Db' => 'override/classes/Db.php',
+  'DbMySQLiCore' => 'classes/DbMySQLi.php',
+  'DbMySQLi' => 'override/classes/DbMySQLi.php',
   'DeliveryCore' => 'classes/Delivery.php',
   'Delivery' => 'override/classes/Delivery.php',
   'DiscountCore' => 'classes/Discount.php',

classes/Db.php

@@ -170,9 +170,9 @@ abstract class DbCore
 
 		if (!isset(self::$_instance[$idServer]))
 		{
-			$class = _DB_TYPE_;
-			if (!class_exists($class))
-				$class = 'MySQL';
+			$class = 'MySQL';
+			if (class_exists('mysqli', false))
+				$class = 'DbMySQLi';
 			self::$_instance[$idServer] = new $class(self::$_servers[$idServer]['server'], self::$_servers[$idServer]['user'], self::$_servers[$idServer]['password'], self::$_servers[$idServer]['database']);
 		}
 

classes/DbMySQLi.php

@@ -0,0 +1,171 @@
+<?php
+/*
+* 2007-2011 PrestaShop 
+*
+* NOTICE OF LICENSE
+*
+* This source file is subject to the Open Software License (OSL 3.0)
+* that is bundled with this package in the file LICENSE.txt.
+* It is also available through the world-wide-web at this URL:
+* http://opensource.org/licenses/osl-3.0.php
+* If you did not receive a copy of the license and are unable to
+* obtain it through the world-wide-web, please send an email
+* to license@prestashop.com so we can send you a copy immediately.
+*
+* DISCLAIMER
+*
+* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
+* versions in the future. If you wish to customize PrestaShop for your
+* needs please refer to http://www.prestashop.com for more information.
+*
+*  @author PrestaShop SA <contact@prestashop.com>
+*  @copyright  2007-2011 PrestaShop SA
+*  @version  Release: $Revision$
+*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+*  International Registered Trademark & Property of PrestaShop SA
+*/
+
+class DbMySQLiCore extends Db
+{
+	/**
+	 * @see DbCore::connect()
+	 */
+	public function	connect()
+	{
+		$this->_link = new mysqli($this->_server, $this->_user, $this->_password, $this->_database);
+		
+		// Do not use object way for error because this work bad before PHP 5.2.9
+		if (mysqli_connect_error())
+			die(Tools::displayError('Link to database cannot be established : '.mysqli_connect_error()));
+
+		// UTF-8 support
+		if (!$this->_link->query('SET NAMES \'utf8\''))
+			die(Tools::displayError('PrestaShop Fatal error: no utf-8 support. Please check your server configuration.'));
+
+		return $this->_link;
+	}
+	
+	/**
+	 * @see DbCore::disconnect()
+	 */
+	public function	disconnect()
+	{
+		$this->_link->close();
+	}
+	
+	/**
+	 * @see DbCore::_query()
+	 */
+	protected function _query($sql)
+	{
+		return $this->_link->query($sql);
+	}
+
+	/**
+	 * @see DbCore::nextRow()
+	 */
+	public function nextRow($result = false)
+	{
+		if (!$result)
+			$result = $this->_result;
+		return $result->fetch_assoc();
+	}
+	
+	/**
+	 * @see DbCore::_numRows()
+	 */
+	protected function _numRows($result)
+	{
+		return $result->num_rows;
+	}
+	
+	/**
+	 * @see DbCore::Insert_ID()
+	 */
+	public function	Insert_ID()
+	{
+		return $this->_link->insert_id;
+	}
+
+	/**
+	 * @see DbCore::Affected_Rows()
+	 */
+	public function	Affected_Rows()
+	{
+		return $this->_link->affected_rows;
+	}
+
+	/**
+	 * @see DbCore::getMsgError()
+	 */
+	public function getMsgError($query = false)
+	{
+		return $this->_link->error;
+	}
+
+	/**
+	 * @see DbCore::getNumberError()
+	 */
+	public function getNumberError()
+	{
+		return $this->_link->errno;
+	}
+	
+	/**
+	 * @see DbCore::getVersion()
+	 */
+	public function getVersion()
+	{
+		return $this->getValue('SELECT VERSION()');
+	}
+	
+	/**
+	 * @see DbCore::_escape()
+	 */
+	public function _escape($str)
+	{
+		return $this->_link->real_escape_string($str);
+	}
+	
+	/**
+	 * @see DbCore::set_db()
+	 */
+	public function set_db($db_name)
+	{
+		return $this->_link->query('USE '.pSQL($db_name));
+	}
+
+	/**
+	 * tryToConnect return 0 if the connection succeed and the database can be selected.
+	 * @since 1.4.4.0, the parameter $newDbLink (default true) has been added.
+	 * 
+	 * @param string $server mysql server name
+	 * @param string $user mysql user
+	 * @param string $pwd mysql user password
+	 * @param string $db mysql database name
+	 * @param boolean $newDbLink Param not used in this class
+	 * @return integer
+	 */
+	static public function tryToConnect($server, $user, $pwd, $db, $newDbLink = true)
+	{
+		$link = new mysqli($server, $user, $password, $db);
+		
+		// Do not use object way for error because this work bad before PHP 5.2.9
+		if (mysqli_connect_error())
+			return 1;
+		$link->close();
+		return 0;
+
+		// UTF-8 support
+		if (!$this->_link->query('SET NAMES \'utf8\''))
+			die(Tools::displayError('PrestaShop Fatal error: no utf-8 support. Please check your server configuration.'));
+	}
+
+	static public function tryUTF8($server, $user, $pwd)
+	{
+		$link = new mysqli($server, $user, $password, $db);
+		$ret = $link->query("SET NAMES 'UTF8'");
+		$link->close();
+		return $ret;
+	}
+}

override/classes/DbMySQLi.php

@@ -0,0 +1,7 @@
+<?php
+
+class DbMySQLi extends DbMySQLiCore
+{
+
+}
+