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<?php $str = "ABcDeFO!.,?:'$#12112"; preg_match_all("/[^AEIOUa-z\W\d]/", $str, $m); var_dump($m);
Output for 7.1.25, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(1) { [0]=> array(3) { [0]=> string(1) "B" [1]=> string(1) "D" [2]=> string(1) "F" } }
preferences:
104.88 ms | 1405 KiB | 4 Q