3v4l.org

run code in 500+ PHP versions simultaneously
<?php declare(strict_types=1); $arr = []; for($i = 0; $i < 4; $i++) var_dump($arr[$i]);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
Warning: Undefined array key 0 in /in/DJ4AI on line 6 NULL Warning: Undefined array key 1 in /in/DJ4AI on line 6 NULL Warning: Undefined array key 2 in /in/DJ4AI on line 6 NULL Warning: Undefined array key 3 in /in/DJ4AI on line 6 NULL
preferences:
71.9 ms | 1038 KiB | 4 Q