The error message 'php memcached not working' indicates that there is an issue with the PHP extension for Memcached. This error can be caused by a variety of factors, including incorrect configuration settings, outdated or incompatible software versions, and connectivity problems between the PHP application and the Memcached server. Another possible cause is insufficient permissions for the user running the PHP script to access the Memcached server.
To resolve the 'php memcached not working' error, there are several steps that can be taken. First, check the configuration settings for both the PHP extension and the Memcached server to ensure they are correct and compatible. Verify that the Memcached server is running and available.
Next, ensure that the user running the PHP script has the necessary permissions to connect to the Memcached server. If the problem persists, try updating the PHP extension for Memcached to the latest version or reinstalling it. Additionally, if the issue is related to connectivity problems, consider modifying firewall rules or network settings to allow communication between the PHP application and the Memcached server. Finally, consult the Memcached documentation and community forums for further troubleshooting tips and support.