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Knowledge Base & Operational DocumentationHow to Troubleshoot a cPanel Website That Fails After a PHP Extension Change
A website can stop working after enabling, disabling, or updating a PHP extension. The selected PHP version may be correct while a required module is absent, incompatible, or configured differently for web requests and command-line jobs.
What to check
Review the PHP error log, active handler and version, loaded modules, per-domain settings, and any recent extension changes. Compare web PHP with CLI PHP and check whether the affected site uses a separate PHP-FPM pool.
Recommended next step
Restore only the needed compatible extension or update the application dependency after a staging check. Verify both web requests and scheduled jobs, then document the configuration so future account changes do not remove it.
How Informatix Systems can help
Informatix Systems provides cPanel hosting and PHP application support. We can review the affected setup, trace the likely cause, and help plan a practical fix. Contact us with the platform involved, when the issue began, and non-sensitive error details.