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<?php $check = ['a', 'b', 'c']; $actual = ['a' => 'one', 'b' => 'two', 'c' => 'three']; $result=array_diff_key(array_flip($check), array_keys($actual)); echo '<pre>'; print_r($result);
Output for git.master, git.master_jit, rfc.property-hooks
<pre>Array ( [a] => 0 [b] => 1 [c] => 2 )

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