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run code in 150+ php & hhvm versions
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<?php $subject = 'AA BB DD '; $pattern = '/(([a-z]+) )/i'; $result = preg_match_all($pattern, $subject, $matches); var_dump($matches);
based on 3LhdV
Output for 4.3.0 - 7.1.0
array(3) { [0]=> array(3) { [0]=> string(3) "AA " [1]=> string(3) "BB " [2]=> string(3) "DD " } [1]=> array(3) { [0]=> string(3) "AA " [1]=> string(3) "BB " [2]=> string(3) "DD " } [2]=> array(3) { [0]=> string(2) "AA" [1]=> string(2) "BB" [2]=> string(2) "DD" } }