3v4l.org

run code in 300+ PHP versions simultaneously
<?php $base = '/some/dir'; $path = 'scr/bar'; $protect = 'foo'; $p1 = $base.'/'.$path; $p2 = $base.'/'.$protect; $result = strcmp($p1,$p2); echo "Result: ".$result; ?>
Output for 7.3.30 - 7.3.33, 7.4.19 - 7.4.20, 7.4.23 - 7.4.33, 8.0.1, 8.0.5 - 8.0.7, 8.0.9 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Result: 13
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 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 - 7.3.29, 7.4.0 - 7.4.16, 7.4.21 - 7.4.22, 8.0.0, 8.0.2 - 8.0.3, 8.0.8
Result: 3328

preferences:
310.06 ms | 405 KiB | 461 Q