3v4l.org

run code in 300+ PHP versions simultaneously
<?php function x () {echo 'ok';} echo x(1,2,3,4,5); $a = array(NULL => 1); echo $a[NULL]; function a($x) {var_dump($x);}; a();
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
ok1 Fatal error: Uncaught ArgumentCountError: Too few arguments to function a(), 0 passed in /in/IgRns on line 5 and exactly 1 expected in /in/IgRns:5 Stack trace: #0 /in/IgRns(5): a() #1 {main} thrown in /in/IgRns on line 5
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
ok1 Warning: Missing argument 1 for a(), called in /in/IgRns on line 5 and defined in /in/IgRns on line 5 Notice: Undefined variable: x in /in/IgRns on line 5 NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
ok1 Warning: Missing argument 1 for a() in /in/IgRns on line 5 NULL

preferences:
257.45 ms | 402 KiB | 349 Q