How to modify the php version of a domain installed on ISPConfig

Procédure

What is PHP?

PHP is a programming language that can be integrated into HTML pages.

It can be used to automate repetitive tasks, in particular by communicating with a database (the most common use of PHP).

The PHP programming language is essential for the smooth operation of CMS such as Wordpress, Joomla, Prestashop, etc., as well as for all e-mail forms.

What versions of php can be activated on a VPS server?

on a VPS server under debian 7 :

• php 5.3
• php 5.4
  

on a VPS server running debian 8 (ordered/installed before 20/12/2016) :

• php 5.3
• php 5.4
• php 5.5
• php 5.6
  

on a VPS server running debian 9 (ordered/installed after 15/11/2017) :

• php 5.3
• php 5.4
• php 5.5
• php 5.6
• php 7.0
• php 7.1

on a VPS server running debian 10 :

• php 5.6
• php 7.0
• php 7.1
• php 7.2
• php 7.3
• php 7.4
• php 8.0

Procedure video

FAQ

• How long do I have to wait for this modification to take effect?

It will take one minute for the requested php version to be activated on your website.

• After modifying the php version on ISPCONFIG, do I get a 503 error?

You will need to wait one minute after making this php modification from ISPCONFIG for your website to use the chosen php version.