public static function set($_key, $_value, $_lifetime = 60, $_options = null) { if ($_lifetime < 0) { $_lifetime = 0; } $cache = new self(); $cache->setKey($_key); $cache->setValue($_value); $cache->setLifetime($_lifetime); if ($_options != null) { $cache->options = json_encode($_options, JSON_UNESCAPED_UNICODE); } return $cache->save(); }