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<?php $one = [3 => 'en.yml']; $two = [3 => 'de.yml']; var_dump(array_merge($one, $two)); var_dump(array_merge($two, $one)); var_dump(array_intersect($one, $two));
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> string(6) "en.yml" [1]=> string(6) "de.yml" } array(2) { [0]=> string(6) "de.yml" [1]=> string(6) "en.yml" } array(0) { }

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