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<?php preg_match("/(\w+)?/", "a test string",$matches); print_r($matches); echo "\n"; preg_match("/(\w*)/", "a test string",$matches); print_r($matches);
Output for 4.3.0 - 7.1.0
Array ( [0] => a [1] => a ) Array ( [0] => a [1] => a )