Provide Mysqli support #425

Hi got the following error when trying to change to mysqli using latest rev.

Fatal error: Call to undefined method mysqli::setAttribute() in /var/www/public/piwik/core/Piwik.php on line 917

regards

Attachment: DB.php hack to work with mysqli
Db.php

I received the Db.php from Emile Schenk es at donauweb dot at

Please contact him for more information on how Piwik works with MySQLi.
We would be happy to support mysqli but the provided hack is not a suitable solution. We would need a different DB class for mysqli and PDO, with a factory, etc.

Please use this ticket to submit patches. Cheers

Reprioritizing given leaks in PdoMysql.

I'm speculating that this will require a newer version of PHP without the Suhosin patch and the ZF update.

PHP 5.2.6-3ubuntu4.2 with Suhosin-Patch 0.9.6.2

ALERT - canary mismatch on efree() - heap overflow detected (attacker '127.0.0.1', file '/path/core/PluginsFunctions/Sql.php', line 44)

PHP 5.2.10 (XAMPP build)

Warning: Wrong parameter count for mysqli_stmt::bind_param() in /path/libs/Zend/Db/Statement/Mysqli.php on line 227

In [1456], fixes #425 - provide MySQLi support; added a factory method and refactored Tracker/Db.php into separate adapters (Tracker/Db/MySqli.php and Tracker/Db/PdoMySql.php).