## **1、匿名函数** ~~~ $server->on('Request', function ($req, $resp) use ($a, $b, $c) { echo "hello world"; }); ~~~ > 可使用`use`向匿名函数传递参数 ## **2、类静态方法** ~~~ class A { static function test($req, $resp) { echo "hello world"; } } $server->on('Request', 'A::Test'); $server->on('Request', array('A', 'Test')); ~~~ > 对应的静态方法必须为`public` ## **3、函数** ~~~ function my_onRequest($req, $resp) { echo "hello world"; } $server->on('Request', 'my_onRequest'); ~~~ ## **4、对象方法** ~~~ class A { function test($req, $resp) { echo "hello world"; } } $object = new A(); $server->on('Request', array($object, 'test')); ~~~ > 对应的方法必须为`public`