Group and Calculate Values in Array - php

Question

I have an array like the following:
Array
(
[0] => Array
(
[0] => Array
(
[Product_Name] => Apple Pie - 8"
[Product_Qty] => 1
[Product_Cat] => Pies
)
[1] => Array
(
[Product_Name] => Pecan Pie - 8"
[Product_Qty] => 1
[Product_Cat] => Pies
)
)
[1] => Array
(
[0] => Array
(
[Product_Name] => Apple Pie - 8"
[Product_Qty] => 1
[Product_Cat] => Pies
)
)
[2] => Array
(
[0] => Array
(
[Product_Name] => Strawberry Pie - 8"
[Product_Qty] => 1
[Product_Cat] => Pies
)
[1] => Array
(
[Product_Name] => Pecan Pie - 8"
[Product_Qty] => 1
[Product_Cat] => Pies
)
)
[3] => Array
(
[0] => Array
(
[Product_Name] => Lemon Pie - 8"
[Product_Qty] => 1
[Product_Cat] => Pies
)
[1] => Array
(
[Product_Name] => Pecan Pie - 8"
[Product_Qty] => 1
[Product_Cat] => Pies
)
)
)
I'm trying to group by same Product_Name and also add up the Product_Qty in each. Any help is greatly appreciated.

Answer 1

You can create a double loop and sum all value of every different product under a different array key as below:
$myArr = [
0 => [
0 => [
"Product_Name" => "Apple Pie - 8",
"Product_Qty" => 1,
"Product_Cat" => "Pies"
],
1 => [
"Product_Name" => "Apple Pie - 8",
"Product_Qty" => 1,
"Product_Cat" => "Pies"
]
],
1 => [
0 => [
"Product_Name" => "Pecan Pie - 8",
"Product_Qty" => 1,
"Product_Cat" => "Pies"
]
],
2 => [
0 => [
"Product_Name" => "Strawberry Pie - 8",
"Product_Qty" => 1,
"Product_Cat" => "Pies"
],
1 => [
"Product_Name" => "Pecan Pie - 8",
"Product_Qty" => 1,
"Product_Cat" => "Pies"
]
],
3 => [
0 => [
"Product_Name" => "Lemon Pie - 8",
"Product_Qty" => 1,
"Product_Cat" => "Pies"
],
1 => [
"Product_Name" => "Pecan Pie - 8",
"Product_Qty" => 1,
"Product_Cat" => "Pies"
]
]
];
$total = [];
foreach($myArr as $group){
foreach($group as $item){
$total[$item["Product_Name"]] = isset($total[$item["Product_Name"]]) ? $total[$item["Product_Name"]] + $item["Product_Qty"] : $item["Product_Qty"];
}
}
var_dump($total);
It will provide that total:
array(4) {
["Apple Pie - 8"]=>
int(2)
["Pecan Pie - 8"]=>
int(3)
["Strawberry Pie - 8"]=>
int(1)
["Lemon Pie - 8"]=>
int(1)
}

Answer 2

If you want to get all data as in array now then you can run below code.
$finalArray = array();
$product_name_arr = array();
foreach ($array as $key => $value) {
foreach ($value as $sub_key => $sub_value) {
if(in_array($sub_value['Product_Name'], $product_name_arr)){
foreach ($finalArray as $fa_key => $fa_value) {
if($fa_value['Product_Name'] == $sub_value['Product_Name']){
$finalArray[$fa_key]['Product_Qty'] = $finalArray[$fa_key]['Product_Qty'] + $sub_value['Product_Qty'];
}
}
} else {
$product_name_arr[] = $sub_value['Product_Name'];
$finalArray[] = $sub_value;
}
}
}