3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = 'foo'; echo $a[0];
Output for 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
f
preferences:
55.81 ms | 872 KiB | 4 Q