MemoryBackend::garbageCollection

public MemoryBackend::garbageCollection()

public function garbageCollection() {
  foreach ($this->events as $name => $identifiers) {
    foreach ($this->events[$name] as $identifier => $timestamps) {
      // Filter by key (expiration) but preserve key => value  associations.
      $this->events[$name][$identifier] = array_filter($timestamps, function() use (&$timestamps) {
        $expiration = key($timestamps);
        next($timestamps);
        return $expiration > microtime(TRUE);
      });
    }
  }
}