3v4l.org

run code in 500+ PHP versions simultaneously
<?php $alphabet = range("A", "Z"); $i =0; Echo $alphabet[$i]; $i =($i+25)%26; Echo $alphabet[$i];
Output for 7.0.0 - 7.0.25, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
AZ
preferences:
93.89 ms | 1499 KiB | 4 Q