3v4l.org

run code in 300+ PHP versions simultaneously
<?php $id = (isset($_GET["id"])) ? $_GET["id"] : "4321"; echo "<some html>" . $id . "<some more html>";
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
<some html>4321<some more html>
preferences:
102.29 ms | 1944 KiB | 4 Q