3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pole1 = array(1,15,18,19,22); $pole2 = array(2,7,18,19,23); $pole3 = array_diff($pole1, $pole2); var_dump($pole3); echo "\n\r"; var_dump(array_diff($pole2, $pole3));
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 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(3) { [0]=> int(1) [1]=> int(15) [4]=> int(22) } array(5) { [0]=> int(2) [1]=> int(7) [2]=> int(18) [3]=> int(19) [4]=> int(23) }

preferences:
342.25 ms | 406 KiB | 460 Q