3v4l.org

run code in 500+ PHP versions simultaneously
<?php $key = 0; $arr = ['key' => 'bar']; if ($arr['key'] != $key) { print("Here!"); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.6
Here!
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
preferences:
111.08 ms | 1478 KiB | 4 Q