Why the PHP version affects WordPress performance, security support and plugin compatibility.
Why this check matters
PHP is the runtime underneath WordPress. Older versions lose security support and can limit the versions of WordPress, themes and plugins you can run confidently.
How to review it
- Confirm the active PHP version in Site Health or your hosting panel.
- Check the requirements of WordPress, the active theme and important plugins.
- Test the site on the target PHP version before changing production.
- Review logs and forms after the switch.
Keep the change safe
Use a supported PHP release and change it through the hosting control panel or host support. Do not edit server configuration from a WordPress content editor.
How WPVitals uses this signal
WPVitals checks this setting locally and reports the result in the WordPress dashboard. The check is a maintenance signal, so review the site context before changing a setting and test the visitor experience afterwards.