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<?php $m = array(); preg_match_all('/(test)|()/', 'testtest', $m); var_dump($m);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> array(3) { [0]=> string(4) "test" [1]=> string(4) "test" [2]=> string(0) "" } [1]=> array(3) { [0]=> string(4) "test" [1]=> string(4) "test" [2]=> string(0) "" } [2]=> array(3) { [0]=> string(0) "" [1]=> string(0) "" [2]=> string(0) "" } }

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