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run code in 200+ php & hhvm versions
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<?php $m = []; var_dump(preg_match("/([A-Z]+)(\d+)/", "ABCD123", $m)); var_dump($m);
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
int(1) array(3) { [0]=> string(7) "ABCD123" [1]=> string(4) "ABCD" [2]=> string(3) "123" }