3v4l.org

run code in 300+ PHP versions simultaneously
<?php $w = 1200; $h = 800; $sw = 800; $r = $w / $sw; echo $h / $r;
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
533.33333333333

preferences:
155.36 ms | 403 KiB | 185 Q