3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); $arr = []; for($i = 0; $i < 4; $i++) var_dump($arr[$i]);
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
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:
62.29 ms | 407 KiB | 5 Q