« Swoole\Client::isConnected Swoole\Client::pause » PHP Manual Swoole\Client Add callback functions triggered by events. Swoole\Client::on (PHP 5 >= 5.2.0, PHP 7, PECL swoole >= 1.9.0) Swoole\Client::on — Add callback functions triggered by events. 说明 public Swoole\Client::on ( string $event , callable $callback ) : void 参数 event callback