3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'cat'; $b = 'cats'; for ($i = 0; $i < strlen($a); $i++) { $result |= (ord($a[$i]) ^ ord($b[$i])); } $c = ($result == 0) ? "equal" : "not equal";
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $result in /in/4BZLa on line 6
Output for 5.0.4 - 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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: result in /in/4BZLa on line 6
Output for 7.3.32 - 7.3.33
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: result in /in/4BZLa on line 6

preferences:
305.13 ms | 402 KiB | 455 Q