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<?php $a = 12345; $b = 98754; $a = str_split($a); $b = str_split($b); $matching = array_intersect($a, $b); Var_dump($matching);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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
array(2) { [3]=> string(1) "4" [4]=> string(1) "5" }
preferences:
127.63 ms | 407 KiB | 5 Q