Php help how to turn a two-dimensional array into an one-dimensional array?

there is now a two-dimensional array in the following format:

Array
(
    [0] => Array
        (
            [id] => 38
            [goods_id] => 77426
            [model_name] => 
            [model_sub_name] => Array
                (
                    [0] => 
                    [1] => 
                    [2] => 
                    [3] => 
                    [4] => 
                )

            [goods_stock] => Array
                (
                    [0] => 321
                )

            [curr_price] => Array
                (
                    [0] => 99
                )

            [goods_weight] => Array
                (
                    [0] => 280
                )

        )

    [1] => Array
        (
            [id] => 39
            [goods_id] => 77426
            [model_name] => 
            [model_sub_name] => Array
                (
                    [0] => 32A
                    [1] => 34A
                    [2] => 36A
                    [3] => 32B
                    [4] => 34B
                    [5] => 36B
                    [6] => 38B
                    [7] => 34C
                    [8] => 36C
                    [9] => 38C
                    [10] => 40C
                    [11] => 
                )

            [goods_stock] => Array
                (
                    [0] => 321
                )

            [curr_price] => Array
                (
                    [0] => 99
                )

            [goods_weight] => Array
                (
                    [0] => 280
                )

        )

)

now you need to change the two-dimensional array into the following format:

Array
(
    [0] => Array
        (
            [model_name] => 
            [model_sub_name] => 
            [goods_stock] => 321
            [curr_price] => 99
            [goods_weight] => 280

        )
    [1] => Array
        (
            [model_name] => 
            [model_sub_name] => 
            [goods_stock] => 321
            [curr_price] => 99
            [goods_weight] => 280

        )
        N

    [N+1] => Array
        (
            [model_name] => 
            [model_sub_name] => 32A
            [goods_stock] => 321
            [curr_price] => 99
            [goods_weight] => 280
               
        )
    [N+2] => Array
        (
            [model_name] => 
            [model_sub_name] => 34A
            [goods_stock] => 321
            [curr_price] => 99
            [goods_weight] => 280
               
        )
    
)

in the above array, goods_stock, curr_price, and goods_weight are all arrays. If there is only one element in the array of these keys, then on the same premise as model_name, goods_stock, curr_price, and goods_weight all take this value, otherwise, take the values in goods_stock, curr_price, and goods_weight corresponding to the subscript of the elements in model_sub_name. For example, when model_sub_name is "white", the corresponding subscript is 1, and there is only one element for goods_stock, curr_price, and goods_weight in the above array, then take the value of this element, and if it is not an element, take the value of goods_stock [1], curr_price [1], and goods_weight [1]. I do not know whether such a description is understood or not. Turn to the gods for help.

$result = array_reduce($arr, function ($carry, $item) { $extraProperties = ['goods_stock', 'curr_price', 'goods_weight']; // $lengths = []; foreach ($extraProperties as $property) { $lengths[$property] = count($item[$property]) - 1; } // foreach ($item['model_sub_name'] as $index => $subName) { $sub = [ 'model_name' => $item['model_name'], 'model_sub_name' => $subName, ]; foreach ($extraProperties as $property) { $propertyIndex = min($index, $lengths[$property]); $sub[$property] = $item[$property][$propertyIndex]; } $carry[] = $sub; } return $carry; }, []);