PHP 合并两个二维数组

思路：遍历二维数组，合并两个二维数组的值，赋值给新数组

    function mergeArray($arr1,$arr2){
        $newArr = [];
        foreach($arr1 as $v1){
            foreach ($arr2 as $v2) {
                $newArr[] = array_merge($v1,$v2);
            }
        }
        return $newArr;
    }