how i can Upgrade my PHP 5.4 to 5.5 or 5.6 with a good way. I dont will destroy my Webserver. I have Debian Wheezy 7.8 and I-MSCP 1.2.x Git. I have search in this Forum for a good Tutorial but i dont find a good thing. I have try it with PHPSwitcher but it dont work because i have PHP-FPM.