3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A{ function foo(){ print "foo"; } } call_user_func('a::foo');
Output for 8.0.10 - 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: call_user_func(): Argument #1 ($callback) must be a valid callback, non-static method A::foo() cannot be called statically in /in/MXepg:9 Stack trace: #0 {main} thrown in /in/MXepg on line 9
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($function) must be a valid callback, non-static method A::foo() cannot be called statically in /in/MXepg:9 Stack trace: #0 {main} thrown in /in/MXepg on line 9
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 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: Non-static method A::foo() should not be called statically in /in/MXepg on line 9 foo
Output for 7.3.32 - 7.3.33
foo
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Strict Standards: call_user_func() expects parameter 1 to be a valid callback, non-static method A::foo() should not be called statically in /in/MXepg on line 9 foo
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: call_user_func(a::foo): First argument is expected to be a valid callback in /in/MXepg on line 9
Output for 4.3.0 - 4.3.1
Warning: call_user_func(a::foo) [http://www.php.net/function.call-user-func]: First argument is expected to be a valid callback in /in/MXepg on line 9

preferences:
266.73 ms | 402 KiB | 360 Q