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<?php $array1 = ['foo' => [1, 2], 'bar' => 1]; $array2 = ['foo' => [3, 4], 'bar' => 2]; var_dump(array_merge_recursive($array1, $array2));
Output for git.master_jit, git.master, rfc.property-hooks
array(2) { ["foo"]=> array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) } ["bar"]=> array(2) { [0]=> int(1) [1]=> int(2) } }

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