Laravel 8 Collection count() and countBy() Methods

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Inside this article we will see the use of count() and countBy() methods in laravel 8 collections. Article contains a very classified information about the basic concept of Laravel 8 Collection count() and countBy().

We will see the concept of count number of items in laravel collection. We will count all items in a collection also will cover count element wise.

The Illuminate\Support\Collection class provides a fluent, convenient wrapper for working with arrays of data. For example, check out the following code. We’ll use the collect helper to create a new collection instance from the array.

As mentioned above, the collect helper returns a new  Illuminate\Support\Collection instance for the given array.

So, creating a collection is as simple as:

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

Learn More –

Let’s get started.


Laravel Installation

We will create laravel project using composer. So, please make sure your system should have composer installed. If not, may be this article will help you to Install composer in system.

Here is the command to create a laravel project-

$ composer create-project --prefer-dist laravel/laravel blog

To start the development server of Laravel –

$ php artisan serve

URL: http://127.0.0.1:8000

Assuming laravel already installed inside your system.


Example #1 Use count() Method

In this example we will consider an array. We will see how to use count() into collection.

Suppose we have SiteController.php a controller file inside /app/Http/Controllers folder.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $data = collect([1, 2, 3, 4, 2, 3, 1, 5, 4, 7, 6, 8, 9, 3, 10, 4, 5]);

        $total = $data->count();

        echo "Total Collection Items: " . $total;
    }
}

Concept

$total = $data->count();

Output


Example #2 Use countBy() Method

We will see how to use countBy() into collection.

Suppose we have SiteController.php a controller file inside /app/Http/Controllers folder.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $data = collect([1, 2, 3, 4, 2, 3, 1, 5, 4, 7, 6, 8, 9, 3, 10, 4, 5]);

        $elements = $data->countBy();

        dd($elements);
    }
}

It will count total occurrence in collection item wise.

Concept

$elements = $data->countBy();

Output

We hope this article helped you to Laravel 8 Collection count() and countBy() Methods Tutorial in a very detailed way.

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