3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a['length'] = 3; $length = (int) isset($a['length']) ? $a['length'] : -1; echo $length;
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
3
preferences:
51.76 ms | 406 KiB | 5 Q