To change an eligible domain's PHP version:
- Open MultiPHP Manager.
- Select the desired domain.
- Choose one of the PHP versions made available on the server.
- Apply the change.
- Test the website, forms, scheduled tasks, and administration pages.
If a site fails after the change, return to the previous known-working PHP version only if it remains installed and permitted for the domain while you identify incompatible code. Do not assume the newest available PHP version is automatically compatible with every legacy application.
Before changing PHP, record the current version and check available choices. Domain-level restrictions may prevent switching back to an older version. Test compatibility on staging first where possible.
A version appearing in a selector does not establish that it still receives upstream security fixes. Check PHP’s supported-version schedule as well as application compatibility.
Documentation for this guidance: www.php.net — supported versions.php.
