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<?php $arr = ['x', 'y', 'z']; $mask = 5; $keys = decbin($mask); $i = 0; $result = array_filter($arr, function($val) use($keys, &$i) { return (bool)$keys[$i++]; }); var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> string(1) "x" [2]=> string(1) "z" }

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