Questions: OS and server information: CentOS 6.4 (Final) Apache 2.2.15 PHP 5.5.1 I previously had php 5.3.x installed but decided to upgrade. I first uninstalled the php 5.3.x and then installed php 5.5.1 but after the installation completed apache did not parse the php files it just downloaded them. I have checked similar questions here I've seen many download scripts written in PHP, from simple one-liners to dedicated classes. Yet, at least half of them share common errors; in many cases