3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = []; $key = 12; $val = isset($array[$key]) ? $array[$key] : null; var_dump($val);
Output for 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 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
NULL
preferences:
115.23 ms | 403 KiB | 180 Q