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<?php $arr1 = [ 2 => [ 1, 2, 3 ] ]; $arr2 = [ 3 => [ 2, 3, 4 ] ]; $arr3 = array_merge($arr1, $arr2); var_dump($arr3);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } [1]=> array(3) { [0]=> int(2) [1]=> int(3) [2]=> int(4) } }

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