3v4l.org

run code in 300+ PHP versions simultaneously
<?php $who = "World"; $str = sprintf("Hello, %s!", $who); echo $str, "\n";
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Hello, World!

preferences:
132.53 ms | 402 KiB | 117 Q