3v4l.org

run code in 300+ PHP versions simultaneously
<?php class CbMan { public function fn(callable $cb) { echo $cb(); } } class Pippo { public function yah() { return "hello world"; } } $methods = ['yah']; $aa = function($instance, $methods) { return call_user_func($instance, $methods); }; $instance = new Pippo(); $cb = $aa($instance, $methods); $cbman = new CbMan(); $cbman->fn($cb);
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, no array or string given in /in/W1qpb:21 Stack trace: #0 /in/W1qpb(24): {closure}(Object(Pippo), Array) #1 {main} thrown in /in/W1qpb on line 21
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($function) must be a valid callback, no array or string given in /in/W1qpb:21 Stack trace: #0 /in/W1qpb(24): {closure}(Object(Pippo), Array) #1 {main} thrown in /in/W1qpb on line 21
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/W1qpb on line 21 Fatal error: Uncaught TypeError: Argument 1 passed to CbMan::fn() must be callable, null given, called in /in/W1qpb on line 27 and defined in /in/W1qpb:5 Stack trace: #0 /in/W1qpb(27): CbMan->fn(NULL) #1 {main} thrown in /in/W1qpb on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/W1qpb on line 21 Catchable fatal error: Argument 1 passed to CbMan::fn() must be callable, null given, called in /in/W1qpb on line 27 and defined in /in/W1qpb on line 5
Process exited with code 255.

preferences:
295.97 ms | 402 KiB | 368 Q