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run code in 150+ php & hhvm versions
Bugs & Features
<?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));
Output for 5.0.0 - 7.1.0
Array ( [0] => a ) Array ( [0] => a ) Array ( [0] => a [1] => 456 ) Array ( [0] => a [1] => 456 ) Array ( [0] => a [1] => 456 [2] => Array ( [0] => 123 ) ) Array ( [0] => a [1] => 456 [2] => Array ( [0] => 123 ) )
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/hDZip on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/hDZip on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/hDZip on line 4
Process exited with code 255.