3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var="ello worl"; echo <<<HTML H{$var}d HTML;
Output for 7.4.0 - 7.4.33, 8.0.1 - 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
Hello world
preferences:
95.35 ms | 1234 KiB | 4 Q