3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = (function_exists('define')); if ($b) { define('A', 100); $f = 'define'; $f('B', $f); class A { } } var_dump(method_exists('A::__constructor'));
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 ArgumentCountError: method_exists() expects exactly 2 arguments, 1 given in /in/MR02V:15 Stack trace: #0 /in/MR02V(15): method_exists('A::__constructo...') #1 {main} thrown in /in/MR02V on line 15
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 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: method_exists() expects exactly 2 parameters, 1 given in /in/MR02V on line 15 NULL
Output for 4.3.0 - 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: Wrong parameter count for method_exists() in /in/MR02V on line 15 NULL

preferences:
355.89 ms | 402 KiB | 459 Q