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<?php $words = "music band sound"; preg_match_all("/\w+/", strtoupper($words), $matches); $words = $matches[0]; var_dump($words);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(5) "MUSIC" [1]=> string(4) "BAND" [2]=> string(5) "SOUND" }

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