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<?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{function o(){echo '*';}} $l = new MyListener(); $e = new EventDispatcher(); $e->r('1', $l); $e->r('1', $l); $e->r('2', $l); $e->d();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: EventDispatcher::r(): Argument #2 ($l) must be of type ListenerInterface, MyListener given, called in /in/YntAA on line 10 and defined in /in/YntAA:2 Stack trace: #0 /in/YntAA(10): EventDispatcher->r('1', Object(MyListener)) #1 {main} thrown in /in/YntAA on line 2
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 2 passed to EventDispatcher::r() must implement interface ListenerInterface, instance of MyListener given, called in /in/YntAA on line 10 and defined in /in/YntAA:2 Stack trace: #0 /in/YntAA(10): EventDispatcher->r('1', Object(MyListener)) #1 {main} thrown in /in/YntAA on line 2
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Catchable fatal error: Argument 2 passed to EventDispatcher::r() must implement interface ListenerInterface, instance of MyListener given, called in /in/YntAA on line 10 and defined in /in/YntAA on line 2
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Argument 2 passed to EventDispatcher::r() must implement interface ListenerInterface, called in /in/YntAA on line 10 and defined in /in/YntAA on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Argument 2 must implement interface ListenerInterface in /in/YntAA on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '&' or T_VARIABLE or T_CONST in /in/YntAA on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '&' or T_VARIABLE or T_CONST in /in/YntAA on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'&'' or `T_VARIABLE' or `T_CONST' in /in/YntAA on line 2
Process exited with code 255.
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