public static function tryGcSessions()
{
if (HttpCache::$sessionGcProbability <= 0 || HttpCache::$sessionGcDivisor <= 0 || rand(1, HttpCache::$sessionGcDivisor) > HttpCache::$sessionGcProbability) {
return;
}
$time_now = time();
foreach (glob(HttpCache::$sessionPath . '/ses*') as $file) {
if (is_file($file) && $time_now - filemtime($file) > HttpCache::$sessionGcMaxLifeTime) {
unlink($file);
}
}
}