Thanks to Nahruto, you will need to replace this dll on:
For xampp 1.6.8+
Download link: http://mtibia.no-ip.info/downloads/libmysql.dll
Code:
xampp/apache/bin
xampp/php
For xampp 1.6.8+
Download link: http://mtibia.no-ip.info/downloads/libmysql.dll