3v4l.org

run code in 500+ PHP versions simultaneously
<?php $p="/tmp/a/../b.php"; var_dump($p, file_exists($p));
Output for 8.2.31 - 8.2.33, 8.3.0 - 8.3.33, 8.4.1 - 8.4.25, 8.5.0 - 8.5.10
string(15) "/tmp/a/../b.php" bool(false)
preferences:
44.86 ms | 788 KiB | 4 Q