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<?php $arr1 = ['a' => 1]; $arr2 = ['a' => 2]; var_dump($arr1 + $arr2, array_merge($arr1, $arr2));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["a"]=> int(1) } array(1) { ["a"]=> int(2) }

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