Merging two multi-dimensional arrays using key and adding values - php

Question

I want to merge two array's using key(product_id) and adding that values(usage).
Array 1
Array
(
[0] => Array
(
[name] => Reschedule A Service
[usage] => 1
[product_id] => 8
)
[1] => Array
(
[name] => Adding An Image
[usage] => 1
[product_id] => 5
)
[2] => Array
(
[name] => Each Calendar Event
[usage] => 1
[product_id] => 14
)
)
Array 2
Array
(
[0] => Array
(
[name] => Adding An Image
[usage] => 1
[product_id] => 5
)
[1] => Array
(
[name] => Schedule A Service
[usage] => 3
[product_id] => 11
)
[2] => Array
(
[name] => Each Calendar Event
[usage] => 2
[product_id] => 14
)
[3] => Array
(
[name] => Sales Performance Dashboard
[usage] => 2
[product_id] => 30
)
[4] => Array
(
[name] => Quote
[usage] => 1
[product_id] => 32
)
)
I need an out put like this merging and adding usage values.
Array
(
[0] => Array
(
[name] => Adding An Image
[usage] => 2
[product_id] => 5
)
[1] => Array
(
[name] => Schedule A Service
[usage] => 3
[product_id] => 11
)
[2] => Array
(
[name] => Each Calendar Event
[usage] => 3
[product_id] => 14
)
[3] => Array
(
[name] => Sales Performance Dashboard
[usage] => 2
[product_id] => 30
)
[4] => Array
(
[name] => Quote
[usage] => 1
[product_id] => 32
)
[5] => Array
(
[name] => Reschedule A Service
[usage] => 1
[product_id] => 8
)
)
This is my code for creating arrays
foreach($query->rows as $product){
$top_products[]=array(
'name'=>$product['name'],
'usage'=>$product['pusage'],
'product_id'=>$product['product_id']
);
}
foreach($query_2->rows as $product){
$top_point_products[]=array(
'name'=>$product['name'],
'usage'=>$product['p_usage'],
'product_id'=>$product['product_id']
);
}

Answer 1

$first =array(
array(
"name" => "Reschedule A Service",
"usage" => 1,
"product_id" => 8
),
array(
"name" => "Adding An Image",
"usage" => 1,
"product_id" => 5
),
array(
"name" => "Each Calendar Event",
"usage" => 1,
"product_id" => 14
)
);
$second =array(
array(
"name" => "Adding An Image",
"usage" => 1,
"product_id" => 5
),
array(
"name" => "Schedule A Service",
"usage" => 3,
"product_id" => 11
),
array(
"name" => "Each Calendar Event",
"usage" => 2,
"product_id" => 14
),
array(
"name" => "Sales Performance Dashboard",
"usage" => 2,
"product_id" => 30
),
array(
"name" => "Quote",
"usage" => 1,
"product_id" => 32
)
);
$result = array_unique(array_merge($first,$second), SORT_REGULAR);
Use array_unique & array_merge

Answer 2

Use the array_merge function, like this:
$C = array_merge($A, $B);
print_r($C);
Read manual Array merge

Answer 3

try this code
<?php
$array1=array
(
0 => array(
'name' => "Reschedule A Service",
'usage' => 1,
'product_id' => 8
),
1 => Array
(
'name' => "Adding An Image",
'usage' => 1,
'product_id' => 5
),
2 => Array
(
'name' => "Each Calendar Event",
'usage' => 2,
'product_id' => 14
)
);
$array2=array
(
0 => Array
(
'name' => "Adding An Image",
'usage' => 1,
'product_id' => 5
),
1 => Array
(
'name' => "Schedule A Service",
'usage' => 3,
'product_id' => 11
),
2 => Array
(
'name' => "Each Calendar Event",
'usage' => 5,
'product_id' => 14
),
3 => Array
(
'name' => "Sales Performance Dashboard",
'usage' => 2,
'product_id' => 30
),
4 => Array
(
'name' => "Quote",
'usage' => 1,
'product_id' => 32
)
);
$product_id1=array_column($array1, 'product_id');
$product_id2=array_column($array2, 'product_id');
$new=array_intersect($product_id1,$product_id2);
foreach ($new as $key => $value) {
if(in_array($new[$key],$product_id2)){
$array2[array_search($new[$key],$product_id2)]['usage']+=$array1[$key]['usage'];
}
}
$new1=array_diff($product_id1,$product_id2);
foreach ($new1 as $key => $value) {
$array2[]=$array1[$key];
}
foreach ($array2 as $key => $value) {
echo "[".$key."]=><br>";
foreach ($value as $key1 => $value1) {
echo "&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp";
echo "[".$key1."]=>".$value1."<br>";
}
echo "<br>";
}
?>
output
[0]=>
[name]=>Adding An Image
[usage]=>2
[product_id]=>5
[1]=>
[name]=>Schedule A Service
[usage]=>3
[product_id]=>11
[2]=>
[name]=>Each Calendar Event
[usage]=>7
[product_id]=>14
[3]=>
[name]=>Sales Performance Dashboard
[usage]=>2
[product_id]=>30
[4]=>
[name]=>Quote
[usage]=>1
[product_id]=>32
[5]=>
[name]=>Reschedule A Service
[usage]=>1
[product_id]=>8

Answer 4

Use array_merge and a simple foreach loop to check your condition and update the usagevalues.
See below
$result = array_merge($arrArray1, $arrArray2);
$result2 = array();
foreach($result as $key => $value){
if(array_key_exists($value['product_id'], $result2)){
$result2[$value['product_id']]['usage'] += $value['usage'];
} else{
$result2[$value['product_id']] = $value;
}
}
print_r($result2);
If you want to reset your resultant array indexes use array_merge again like this
$result2 = array_merge($result2);
Hope this will help