How to count the total number of items in a Collection in Laravel?

To count the total number of items in a Laravel collection, you can use the count method. This method will return the number of items in the collection.

Here’s an example:

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

// $count is now 5

You can also use the size method, which is an alias of the count method:

$collection = collect([1, 2, 3, 4, 5]);
$count = $collection->size();

// $count is now 5

If you want to count the number of items in a specific key of the collection items, you can pass the key to the count method:

$collection = collect([
    ['name' => 'Alice', 'age' => 25],
    ['name' => 'Bob', 'age' => 30],
    ['name' => 'Charlie', 'age' => 35],
]);

$count = $collection->count('age');

// $count is now 3

Note that the count method will only count the items in the collection, not the sum of the values of a specific key. If you want to calculate the sum of the values of a specific key, you can use the sum method.

$collection = collect([
    ['name' => 'Alice', 'age' => 25],
    ['name' => 'Bob', 'age' => 30],
    ['name' => 'Charlie', 'age' => 35],
]);

$sum = $collection->sum('age');

// $sum is now 90