3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start = new DateTime('yesterday'); $serialized = array( 'class' => get_class($start), 'state' => (array) $start ); unset($start); var_dump(call_user_function($serialized['class'], '__set_state', $serialized['state']));
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, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Uncaught Error: Call to undefined function call_user_function() in /in/NOvDW:13 Stack trace: #0 {main} thrown in /in/NOvDW on line 13
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Call to undefined function call_user_function() in /in/NOvDW on line 13
Process exited with code 255.

preferences:
207.66 ms | 402 KiB | 330 Q