如何在另一个数组中推送数组

Question

I want to store sub category name and products related to that particular subcategory in array.

Below is my code,

f ($sub_category->num_rows > 1) {
  while ($row = mysqli_fetch_array($sub_category)) {
    $subcategory_id = $row['sub_cat_id'];
    $subcategory_name['sub_category_name'][] = $row['sub_cat_name'];             
    $sql_subrec = "SELECT es_product_description.name AS prod_name FROM es_product_to_category LEFT JOIN es_product_description ON es_product_description.product_id=es_product_to_category.product_id LEFT JOIN es_product ON es_product_description.product_id = es_product.product_id WHERE es_product_to_category.category_id = $subcategory_id AND es_product.status=1";
    //echo "<pre>";print_r($sql_subrec);
    $sub_product = $conn->query($sql_subrec);   
    while ($prow = mysqli_fetch_assoc($sub_product)) {
      $subcategory_name['sub_category_name']['products_name'][] = $prow['prod_name'];
    }
  }

  //$subcategory_name[] = array('product_data' => $subcategory_name,);
  //echo "<pre>";print_r($subcategory_name);
  echo "<pre>";print_r($subcategory_name);      
}

Result is not coming as expected.

I want to get products inside related subcategory array but it is coming everything in first array.

Array
(
    [sub_category_name] => Array
        (
            [0] => Weighing Scale
            [products_name] => Array
                (
                    [0] => BS-250 Baby Scale
                    [1] => DS-415N Bench Scale
                    [2] => DS-415N Platform Scale
                    [3] => DS-65 Counter Scale
                    [4] => DS-852 Weighing Scale
                    [5] => DS-252 Weighing Scale
                    [6] => DS-215N Platform Scale
                    [7] => DS-75 Counter Scale
                    [8] => DS-415 Smile
                    [9] => DS-215SS Platform Scale
                    [10] => DS-450 Table Top Weighing Scale
                    [11] => DS-450SS Bench Scale
                    [12] => DS-451HP Weighing Scale
                    [13] => DS-215 Hanging Scale
                    [14] => DS-215N Trolley Scale
                    [15] => DS-673 Weighing Scale
                    [16] => DS-315 Series Crane Scale
                    [17] => DS-515 Weighing Scale
                    [18] => DS-450CW Check Weigher Scale
                    [19] => DC-810 Counting, Barcode Printing Scale
                    [20] => DC-85 Counting Scale
                    [21] => DS-252C Counting Scale
                    [22] => DC-810 Counting, Barcode Printing Scale
                    [23] => SI-810 Label Printing Scale
                    [24] => SI-810PR Receipt Printing
                    [25] => DS-252PR Receipt Printing Scale
                    [26] => Barcode Label Printer Scales
                    [27] => Receipt Printer Scales
                    [28] => SI-810PR Barcode Label Printer Scale
                    [29] => SM - 100EV+ Barcode Label Printer Scale
                    [30] => SI-810PRSS Receipt Printer Scale
                    [31] => SI-810PR Receipt Printer Scale
                    [32] => DS-252PR Receipt Printer Scale
                    [33] => DC-810 Counting, Barcode Printing Scale
                    [34] => SI-810 Label Printing Scale
                    [35] => DS-451TW Tank/Vessel Weighing
                    [36] => DS-451 Milk Weighing
                    [37] => SI-810 System Scale Bench Type
                    [38] => SI-810 System Scale Platform Type
                    [39] => HT-HTR Series Analytical Balance
                    [40] => MX-50 Moisture Analyzer
                    [41] => AJ Series Precision Balance
                    [42] => PG/FB Precision Balance
                    [43] => DS-852G Precision Balance
                    [44] => LF-225DR Semi-micro balance
                )

            [1] => Industrial Counting Scale
            [2] => Retail Printer Scale
            [3] => Weighing System & Solutions
            [4] => Weighing Balance
        )

)

Answer 1

As far as I understand from you limited explanation you might just need to do something like this in your second while:

$subcategory_name['sub_category_name'][$row['sub_cat_name']]['products_name'][] = $prow['prod_name'];

But this is just a guess... please post the expected output and the actual one.