I've a sample collection
#items: array:4 [▼
0 => Collection {#465 ▼
#items: array:2 [▼
"id" => 1
"user_id" => 5
]
}
1 => Collection {#455 ▼
#items: array:2 [▼
"id" => 2
"user_id" => 5
]
}
2 => Collection {#419 ▼
#items: array:2 [▼
"id" => 3
"user_id" => 1
]
}
3 => Collection {#410 ▼
#items: array:2 [▼
"id" => 4
"user_id" => 1
]
}
]
}
how can I aggregate the above collection to the below collection. It is the count of ids for every user_id's.
#items: array:2 [▼
0 => Collection {#465 ▼
#items: array:2 [▼
"user_id" => 1
"count" => 2
]
}
1 => Collection {#455 ▼
#items: array:2 [▼
"user_id" => 5
"count" => 2
]
}
]
}
Any suggestions would be appreciated.
My Answer:
php
$collection = collect([
['name' => 'John', 'age' => 30],
['name' => 'Jane', 'age' => 25],
['name' => 'Alice', 'age' => 35],
]);
$totalAge = $collection->reduce(function ($carry, $item) {
return $carry + $item['age'];
}, 0);
echo $totalAge; // Output: 90
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