Laravel 9 Collection contains() and containsStrict() Methods

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Inside this article we will see the use of contains() and containsStrict() methods in laravel 9 collections. Article contains a very classified information about the basic concept of Laravel 9 Collection contains() and containsStrict().

We will see the concept of search in laravel collection. We will search into single dimensional array, multi dimensional array and even also in laravel eloquent.

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

Open terminal and run this command to create a laravel project.

$ composer create-project laravel/laravel myblog

It will create a project folder with name myblog inside your local system.

To start the development server of laravel –

$ php artisan serve

URL: http://127.0.0.1:8000

Assuming laravel already installed inside your system.

Collection – Use contains() Method

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

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

Code Example #1

Laravel Collection contains()

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection = collect([
            "India",
            "Australia",
            "South Africa",
            "Nepal"
        ]);

        $collection->contains('Nepal');  /* true */
        $collection->contains('China');   /* false */
    }
}

Concept

$collection->contains('Nepal');  /* true */

Code Example #2

Laravel Collection contains() with Key Value Check

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection = collect([
            ["id" => 1, "name" => "Sanjay", "email" => "sanjay@gmail.com"],
            ["id" => 2, "name" => "Vijay", "email" => "vijay@gmail.com"],
            ["id" => 3, "name" => "Ashish", "email" => "ashish@gmail.com"]
        ]);

        $collection->contains('name', 'Vijay');  /* true */
        $collection->contains('name', 'Dhananjay');   /* false */
    }
}

Concept

$collection->contains('name', 'Vijay');  /* true */

Code Example #3

Laravel Eloquent with Collection contains()

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Product;

class SiteController extends Controller
{
    public function index()
    {
        Product::create(['name' => 'Science Books', 'price' => 2200]);
        Product::create(['name' => 'Tshirts', 'price' => 1250]);
        Product::create(['name' => 'Jeans', 'price' => 1500]);

        Product::get()->contains('name', 'Jeans'); /* true */

        Product::get()->contains('name', 'Electronic Device');  /* false */

        Product::get()->contains('price', 1500);  /* true */
    }
}

Concept

Product::get()->contains('name', 'Jeans'); /* true */

Code Example #4

Laravel Collection contains() with function

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Product;

class SiteController extends Controller
{
    public function index()
    {
        Product::create(['name' => 'Science Books', 'price' => 2200]);
        Product::create(['name' => 'Tshirts', 'price' => 1250]);
        Product::create(['name' => 'Jeans', 'price' => 1500]);

        Product::get()->contains(function ($key, $value) {
            return $value->price > 1000;
        }); // true
    }
}

Concept

Product::get()->contains(function ($key, $value) {
     return $value->price > 1000;
}); // true

Collection – Use containsStrict() Method

We will see how to use containsStrict() into collection. It checks the value and the type as well.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection = collect([100, 150, 200, 250, 300]);

        $collection->containsStrict('150');  /* false */

        $collection->containsStrict(150);  /* true */
    }
}

We hope this article helped you to Laravel 9 Collection contains() and containsStrict() Methods Tutorial in a very detailed way.

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