3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class EventDispatcher{function r($e, ListenerInterface $l){$this->e[$e][] = $l;} function d($e){foreach ($this->e[$e] as $l){$l->o();}}} interface ListenerInterface{function o();} class MyListener implements ListenerInterface{function o(){echo '*';}} $l = new MyListener(); $e = new EventDispatcher(); $e->r('1', $l); $e->r('1', $l); $e->r('2', $l); $e->d('1');
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
**
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected T_STRING, expecting '&' or T_VARIABLE or T_CONST in <b>/in/kUkEU</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_STRING, expecting '&' or T_VARIABLE or T_CONST in <b>/in/kUkEU</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `'&'' or `T_VARIABLE' or `T_CONST' in <b>/in/kUkEU</b> on line <b>2</b><br />
Process exited with code 255.