3v4l.org

run code in 500+ PHP versions simultaneously
<?php function ➕($other) { echo "added"; } function ➖($other) { echo "subtracted"; } ➖(4); ➕(5);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.35, 8.3.0 - 8.3.36, 8.4.1 - 8.4.27, 8.5.0 - 8.5.11
subtractedadded

preferences:
30.69 ms | 1507 KiB | 8 Q