I have an collection returned by a Eloquent Query. Each element of the collection is an array with only two integers elements (branch_id, event_id). I need to make and array or collection where all the identical pairs of elements are combined in the same array, because I need to count how many times a pair of elements appears and also being able to access to its values.
I am using the groupBy method of Query Builder to group the result by two columns, but it only returns the data combined by the first column name I passed to the method.
For Example:
array:15 [▼
0 => {#277 ▼
+"branch_id": 1
+"event_id": 1
}
1 => {#279 ▼
+"branch_id": 1
+"event_id": 1
}
2 => {#280 ▼
+"branch_id": 1
+"event_id": 1
}
3 => {#281 ▼
+"branch_id": 1
+"event_id": 1
}
4 => {#282 ▼
+"branch_id": 1
+"event_id": 2
}
5 => {#283 ▼
+"branch_id": 1
+"event_id": 21
}
6 => {#292 ▼
+"branch_id": 58
+"event_id": 21
}
7 => {#284 ▼
+"branch_id": 2
+"event_id": 5
}
8 => {#285 ▼
+"branch_id": 3
+"event_id": 3
}
9 => {#286 ▼
+"branch_id": 4
+"event_id": 4
}
10 => {#287 ▼
+"branch_id": 5
+"event_id": 9
}
11 => {#289 ▼
+"branch_id": 5
+"event_id": 9
}
12 => {#288 ▼
+"branch_id": 5
+"event_id": 8
}
13 => {#290 ▼
+"branch_id": 7
+"event_id": 10
As you can see, the first four arrays has the same values (branch_id: 1, event_id: id) I need to retrieve those values combined in a single array, and so forth with every array that has the same values.