What could be causing old session files not to be deleted on a server?

The issue of old session files not being deleted on a server could be caused by incorrect file permissions or a misconfiguration in the PHP session save path. To solve this issue, you can manually delete the old session files or adjust the session.gc_maxlifetime setting in your php.ini file to automatically delete old session files after a specified period of time. 

// Set the session garbage collection probability to 1 in 100
ini_set('session.gc_probability', 1);
ini_set('session.gc_divisor', 100);

// Set the session lifetime to 30 minutes
ini_set('session.gc_maxlifetime', 1800);

Keywords

session files deletion server PHP cleanup

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