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<?php $a = array("a" => "apple", "orange", "peach", "orange"); $b = array("b" => "apple", "banana", "orange"); $r = array_diff($a, $b); var_dump($r);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [1]=> string(5) "peach" }

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