Group similar items in array of objects - json

Question

Hello i have the following JSON:
[
{
"name": "Donation",
"collection": {
"name": "Donation Company 1",
"collection": {
"id": 1,
"category": "Donation",
"name": "Some Donation",
"price": 10,
"description": "Hahahaha",
"company": "Donation Company 1"
}
}
},
{
"name": "Donation",
"collection": {
"name": "Donation Company 1",
"collection": {
"id": 2,
"category": "Donation",
"name": "Another Donation",
"price": 50,
"description": "LoL",
"company": "Donation Company 1"
}
}
},
{
"name": "Insurance Company 1",
"collection": {
"name": "Hehe",
"collection": {
"id": 3,
"category": "Insurance",
"name": "Lorem Ipsum Solor",
"price": 25,
"description": "Lmao",
"company": "Insurance Company 1"
}
}
},
{
"name": "Insurance Company 2",
"collection": {
"name": "Donation Company 1",
"collection": {
"id": 5,
"category": "Insurance",
"name": "Sample Extra",
"price": 500,
"description": "Lorem ipsum dolor",
"company": "Insurance Company 2"
}
}
}
]
I'm having trouble trying to group the similar items together, as in all items in the same category appear in the same category array.
And in each category all items that have the same company end up in the same company array.
This is an example what i am trying to accomplish, i used an online editor to construct the JSON:
expected-json-output-when-saved
I used the laravel collect() helper function to construct my array of objects, i have tried several combinations in foreach loops and have been at it for hours but have still not been able to get the expected JSON returned.

Answer 1

Assuming you json_decode() that JSON string and stored it in a $json variable, you can do the following:
$collection = collect($json);
$collection = $collection->groupBy('collection.collection.category');
Dump the $collection variable to see the result.