What are common causes of the "No space left on device" error in PHP sessions?

The "No space left on device" error in PHP sessions typically occurs when the server's disk space is full, causing session data to not be able to be saved. To solve this issue, you can either increase the disk space on the server or clear out old session data to free up space. 

// Clear out old session data to free up space
session_start();

// Set the session garbage collection probability to 0 to force the cleanup
ini_set('session.gc_probability', 0);

// Start the session cleanup
session_start();

// Reset the session garbage collection probability to its default value
ini_restore('session.gc_probability');

Keywords

PHP sessions error disk space storage

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