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<?php $array1 = ['apple', 'orange', 'orange', 'apricot', 'melon', 'watermelon']; $array2 = ['apple', 'orange', 'orange']; var_export( array_intersect($array2, $array1) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'apple', 1 => 'orange', 2 => 'orange', )

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