3571 /**

  3572  * Cron task - clears out outdated high-auth session keys

  3573  */

  3574 

  3575 function cron_clean_old_admin_keys()

  3576 {

  3577   global $db, $session, $paths, $template, $plugins; // Common objects

  3578   

  3579   $threshold = time() - ( 15 * 60 );

  3580   $ul_member = USER_LEVEL_MEMBER;

  3581   if ( !$db->sql_query('DELETE FROM ' . table_prefix . "session_keys WHERE time < $threshold AND auth_level > $ul_member;") )

  3582     $db->_die();

  3583 }

  3584 

  3585 // Once a week

  3586 register_cron_task('cron_clean_old_admin_keys', 168);

  3587