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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 'abcitoun'; preg_match_all('/[aeiou]+/', $a, $matches); print_r($matches);
based on v33Mm
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0beta1
Array ( [0] => Array ( [0] => a [1] => i [2] => ou ) )