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<?php $arr= [16,8,4,2,1]; $number = 13; $bin = str_split(str_pad(decbin($number),count($arr),"0",STR_PAD_LEFT)); Echo implode(",", array_intersect_key($arr,array_intersect($bin, ["1"])));
Output for git.master, git.master_jit, rfc.property-hooks
8,4,1

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