gateway的长连接出现监听不到onclose事件的情况

public static function onClose($client_id) {
        $port = $_SERVER;
        switch ($port) {
            case '8282':
            default:
                $url = 'xxxxxxx';
                $data = json_encode();
$dir_name = '/www/gateway/logs/';
                if(!is_dir($dir_name)){
                    @mkdir($dir_name, 0777, true);
                }
                $result = Curl::curl_post($url, , 3);
                if(!$result || $result != 0){
                    file_put_contents($dir_name.date('Ymd').'.log', date('Y-m-d H:i:s').' ' .json_encode($result).' client_id:'.$client_id.PHP_EOL,FILE_APPEND);
                }
                break;
        }
}