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<?php $arr = ["!qwerty","sapien", "!Bart", "!qwerty", "aa!bb"]; $filtered = preg_grep("/^\!.*$/", $arr); Var_dump($filtered); var_dump(array_diff($arr, $filtered));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(7) "!qwerty" [2]=> string(5) "!Bart" [3]=> string(7) "!qwerty" } array(2) { [1]=> string(6) "sapien" [4]=> string(5) "aa!bb" }

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