3v4l.org

run code in 300+ PHP versions simultaneously
<?php class x { function a(){} } $x = new x(); call_user_func_array(array($x, 'undefined'), []);
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_array(): Argument #1 ($callback) must be a valid callback, class x does not have a method "undefined" in /in/lvfkD:7 Stack trace: #0 {main} thrown in /in/lvfkD on line 7
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback, class x does not have a method "undefined" in /in/lvfkD:7 Stack trace: #0 {main} thrown in /in/lvfkD on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: call_user_func_array() expects parameter 1 to be a valid callback, class 'x' does not have a method 'undefined' in /in/lvfkD on line 7
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/lvfkD on line 7
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/lvfkD on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/lvfkD on line 7
Process exited with code 255.

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