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run code in 200+ php & hhvm versions
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<?php preg_match("/(\w+)?/", "dfadfasd",$matches); print_r($matches); echo "\n"; preg_match("/(\w*)/", "dsfadsf",$matches); print_r($matches);
based on EEoJZ
Output for 4.3.0 - 7.2.0
Array ( [0] => dfadfasd [1] => dfadfasd ) Array ( [0] => dsfadsf [1] => dsfadsf )