更新时间：2022-03-15 12:35:51
来源：网络转载

在数组PHP中合并重复项[关闭]

I have an array generated daily that will have duplicate products in it. 

[0] => Array
    (
        [product_id] => 85
        [name] => Widescreen Espresso v6.1
        [quantity] => 1
    )

[1] => Array
    (
        [product_id] => 85
        [name] => Widescreen Espresso v6.1
        [quantity] => 2
    )

[2] => Array
    (
        [product_id] => 114
        [name] => Panama Esmerelda Diamond Mountain
        [quantity] => 1
    )

I want to find duplicate products and total them up in an array that would look like this:

[0] => Array
    (
        [product_id] => 85
        [name] => Widescreen Espresso v6.1
        [quantity] => 3
    )

[1] => Array
    (
        [product_id] => 114
        [name] => Panama Esmerelda Diamond Mountain
        [quantity] => 1
    )

UPDATE:

I didn't want to remove the duplicates I want to merge duplicates so that the quantity of the product is added together. I managed to work a solution to it with the help of Meenesh Jain's answer below.

           $final_array = array();
           foreach($order_data as $item => $item_value) {
               $pid = $item_value['product_id'];
               if(!isset($final_array[$pid])) {
                 $final_array[$pid] = $item_value;
               } else {
                 $final_array[$pid]['quantity'] += $item_value['quantity'];
               }
            }
            print_r(array_values($final_array));


 3 条回答

网友1解答：

  • You can do it with mysqli

    OR

    you can apply a custom method on your array

     $temp_array = $new_array = array();
 foreach($array as $key => $arr_values){
   if(!in_array($arr_values['product_id'], $temp_array)){
         array_push($temp_array, $arr_values['product_id']);
         array_push($new_array,$array[$key]);
   } 
  }

    // this code will do the trick

网友2解答：

  • My try:

    function newArray($oldarray){
    $newarray;
    $newarray[0] = $oldarray[0];
    $ids;
    $ids[0] = array($oldarray[0][product_id],0);
    for($i = 1; $i < count($oldarray);$i++){
        $add = true;
        for($x = 0; $x < count($ids);$x++){
            if($oldarray[$i][product_id] == $ids[$x][0]){
                $add = false;
                $newarray[$ids[$x][1]-1] = array($newarray[$ids[$x][1]-1][product_id],$newarray[$ids[$x][1]-1][name],$newarray[$ids[$x][1]-1][quantity]+$oldarray[$i][quantity]);
            }
        }
        if($add == true){
            $newarray[count($newarray)] = $oldarray[$i];
            $ids[count($ids)] = array($oldarray[$i][product_id],count($newarray));
        }
    }
    return $newarray;        
}

网友3解答：

  • You need to use this function (need to pass $array=name of array and $key as 'product_id'): 

    function super_unique($array,$key)

    {

       $temp_array = array();

       foreach ($array as &$v) {

           if (!isset($temp_array[$v[$key]]))

           $temp_array[$v[$key]] =& $v;

       }

       $array = array_values($temp_array);

       return $array;



    }

    Example :

    <?php
$vikas=array('0' => array
    (
        'product_id' => 85,
        'name' => "Widescreen Espresso v6.1", 
        'quantity' => 1
    ),

'1' => array
    (
        'product_id' => 85,
        'name' => "Widescreen Espresso v6.1",
        'quantity' => 2
    ),

 '2' => array
    (
        'product_id' => 114,
        'name' => "Panama Esmerelda Diamond Mountain",
        "quantity" => 1 
    )

    );


    function super_unique($array,$key)

{

   $temp_array = array();

   foreach ($array as &$v) {

       if (!isset($temp_array[$v[$key]]))

       $temp_array[$v[$key]] =& $v;

   }

   $array = array_values($temp_array);

   return $array;



}

//print_r(array_unique($vikas['product_id']));
$vik=super_unique($vikas,'product_id');
print_r($vik);

?>
php