In short: You can choose a PHP version separately for each domain in SiteWorx.
Before you change it: Take a current website and database backup, confirm that your application supports the new version, and plan to test the site immediately afterwards.
Change the PHP version
- Sign in to SiteWorx.
- Go to Hosting Features > Domains > PHP Options.
- Select the pencil icon beside the domain you want to change.
- Choose the required version from PHP Version.
- Select Save.
The setting normally takes effect promptly. You can make the same change from Hosting Features > Domains > Manage; you do not need to change it in both places.
Check that the change worked
- Open the public website and its administration area.
- Test forms, logins, scheduled tasks and any payment or API integrations.
- Clear application caches where appropriate.
If the website stops working
Return to PHP Options and select the previous version. A blank page or HTTP 500 error usually means the application, a plugin, a theme or a required PHP extension is not compatible. Review the website's PHP error log, then update or replace the incompatible component before trying again.
If the required version is not listed, open a support ticket with the domain name and application requirements.
Further reading: InterWorx: Change the PHP version for a domain.
