Go to Websites. Click on the required website name in the list. Website dashboard opens. Click Web Hosting Settings. The General tab of the Web Hosting Settings page shows the default PHP settings configured by provider; they are customizable according to the terms of your subscription.
To change the selection of PHP implementation, click on the Edit button at the bottom of the page, apply the changes and click Submit.
Note: When creating a new domain with Apache web hosting, if you choose to create a new webspace for it, you will be offered to configure the same PHP settings for it.
Note: Please bear in mind that the applied changes may lead to PHP applications failure on the already provisioned webspaces. Please also note that if you disable the PHP 5 engine on a webspace which contains .php5 webpages, these webpages will become inaccessible.