Combine and Sum the data with the same date - laravel

Question

Forgive me for my bad english because it's not my first language
I have a blockers on how to combine and add some of the data
I have this data from my first collection
first Collection
[
{
"dateTime": "10/01/2022",
"gc": 0,
"credit": 20,
"debit": 1000,
"voucher": 0,
"e_gift": 0,
"cash": 3000
},
{
"dateTime": "10/02/2022",
"gc": 0,
"credit": 10,
"debit": 10,
"voucher": 0,
"e_gift": 0,
"cash": 100
},
]
2nd Collection
[
{
"dateTime": "10/01/2022",
"Gross Total": 6000,
"Discount": 300
},
{
"dateTime": "10/02/2022",
"Gross Total": 4000,
"Discount": 100
},
]
What result i want is they will combine based on date and all the data from first collection will be add to gross total
result is like this
[
{
"dateTime": "10/01/2022",
"gc": 0,
"credit": 20,
"debit": 1000,
"voucher": 0,
"e_gift": 0,
"cash": 3000
"Gross Total": 6000,
"Discount": 300
"total amount" : 10020
},
{
"dateTime": "10/02/2022",
"gc": 0,
"credit": 10,
"debit": 10,
"voucher": 0,
"e_gift": 0,
"cash": 100
"Gross Total": 4000,
"Discount": 100,
"total amount" : 4120
},
]

Answer 1

let's call them collection1 and collection2, using Collection methods such as merge and push this should work:
$merged = collect();
foreach(collection1 as $e){
$temp = collect($e)->merge($collect2->where('dateTime', $e['dateTime'])->first());
$merged->push($temp);
}
return $merged;
Notice that i've created these variables using a sample from your code above:
$collect2 = collect([
[
"dateTime"=> "10/01/2022",
"Gross Total"=> 6000,
"Discount"=> 300
],
[
"dateTime"=> "10/02/2022",
"Gross Total"=> 4000,
"Discount"=> 100
],
]);
please check the Documentation for more details