Online PHP editor | refs for hDZip

<?php class Signal { protected $listeners; function add($callback) { $this->listeners[]=$callback; } function dispatch() { if (empty($this->listeners)) { return; } $args = func_get_args(); $numArgs = func_num_args(); foreach ($this->listeners as $callback) { switch ($numArgs) { case 0: call_user_func($callback); break; case 1: call_user_func($callback, $args[0]); break; case 2: call_user_func($callback, $args[0], $args[1]); break; default: call_user_func_array($callback, $args); } } } } function myListener() { $args = func_get_args(); print_r($args); } $signal = new Signal(); $signal->add('myListener'); $signal->add('myListener'); $signal->dispatch('a'); $signal->dispatch('a',456); $signal->dispatch('a',456,array(123));