How to calculate the sum of values in a numeric collection in illuminate/collections?

To calculate the sum of values in a numeric collection using Illuminate/Collections in Laravel, you can use the sum() method.

Here is an example of how to calculate the sum:

use Illuminate\Support\Collection;

$collection = collect([1, 2, 3, 4, 5]);

$total = $collection->sum();

echo $total;

Output:

You can also use the sum() method with a callback function to perform calculations on nested values or object properties:

use Illuminate\Support\Collection;

$collection = collect([
    ['name' => 'John', 'age' => 20],
    ['name' => 'Jane', 'age' => 25],
    ['name' => 'Sam', 'age' => 30],
]);

$totalAge = $collection->sum(function ($item) {
    return $item['age'];
});

echo $totalAge;

Output:

In the above example, the callback function returns the 'age' value from each item, and the sum() method calculates the total age.