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<?php $arr = array(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8); for ($c = count($arr), $i = 1; $i < $c; $i++) { $arr[0] ^= $arr[$i]; } echo $arr[0];
Output for git.master, git.master_jit, rfc.property-hooks
8

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