PHP extensions add features that applications need, such as database access, image processing, or ZIP-file support. The available extensions depend on the PHP version and how the hosting service is configured.
Check the application requirements
Use the requirements published by your application's developer. Include the required PHP version and extension names when asking us to check compatibility. An extension available for one PHP version is not necessarily available for another.
If your application reports a missing extension, open a support ticket with the domain, the application and version, and the exact error. We can check the PHP environment serving that website.
Why an old module list is not enough
A static list can become inaccurate after PHP or server changes. Older technologies such as the original mysql extension and Zend Optimizer should not be treated as current application requirements. Use a supported application release rather than trying to recreate an obsolete PHP environment.
Web requests and command-line tasks can use different PHP binaries, versions, and configuration files. A command-line module list alone does not establish which extensions your website is using.
Do not upload a public configuration report or install arbitrary extension files to troubleshoot. Ask us to verify the required extension for your domain.
