3v4l.org

run code in 500+ PHP versions simultaneously
<?php $idlink = '57'; echo $idlink; echo "\n"; var_dump($idlink); echo $idlink+3;
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
57 string(2) "57" 60

preferences:
98.07 ms | 1236 KiB | 4 Q