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$server->on('Request', function ($req, $resp) { echo "hello world"; });
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class A { static function test($req, $resp) { echo "hello world"; } } $server->on('Request', 'A::Test');
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function my_onRequest($req, $resp) { echo "hello world"; } $server->on('Request', 'my_onRequest');
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class A { function test($req, $resp) { echo "hello world"; } } $object = new A(); $server->on('Request', array($object, 'test'));