3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=2; $b=3; define("CCC","4"); $c=CCC; $b=$b*2; $d=$a+$b+$c; $f=$a.$b.$c; echo $d; echo $f; ?>
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
12264

preferences:
174.97 ms | 404 KiB | 230 Q