3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = explode(",","A,B,C,D,E,F,G"); $b = explode(",","B,A,C,D,F,E,G"); echo count($a) - count(array_diff_assoc($a,$b));
Output for 7.1.25 - 7.1.27, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
3
preferences:
110.69 ms | 407 KiB | 5 Q