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<?php $a = ['a', 'b', 'c', 'd']; $b = ['b', 'c', 'd', 'e', 'f']; var_dump(array_intersect($a, $b));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [1]=> string(1) "b" [2]=> string(1) "c" [3]=> string(1) "d" }

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