How to Remove Duplicate Items from Collection in Laravel?

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Hi Artisan,

Here, i will show you how to works remove duplicates from collection laravel. i explained simply about how to remove duplicate rows in laravel. you can see laravel collection->unique by key. Here you will learn laravel eloquent remove duplicates.

In this example i will explain you how to use laravel collection uniuqe and i will give you some example that will help you to delete duplicates records from collection in laravel.

Let's see bellow one by one example with output:

Example 1:

public function index()
{
    $myCollection = collect([1, 2, 2, 3, 4, 4, 5, 6, 4, 2]);
      
    $uniqueCollection = $myCollection->unique();
      
    $uniqueCollection->all();
      
    dd($uniqueCollection);
}

Output:

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [0] => 1
            [1] => 2
            [3] => 3
            [4] => 4
            [6] => 5
            [7] => 6
        )
)

Example 2:

public function index()
{
  
    $myCollection = collect([
                    ['id'=>1, 'name'=>'Hardik', 'state'=>'Gujarat', 'country'=>'India'],
                    ['id'=>2, 'name'=>'Paresh', 'state'=>'Gujarat', 'country'=>'India'],
                    ['id'=>3, 'name'=>'Vimal', 'state'=>'MP', 'country'=>'India'],
                    ['id'=>4, 'name'=>'John', 'state'=>'New York', 'country'=>'US'],
                    ['id'=>5, 'name'=>'Ken', 'state'=>'New York', 'country'=>'US'],
                ]);
      
    $uniqueCollection = $myCollection->unique('country');
      
    $uniqueCollection->all();
      
    dd($uniqueCollection);
}

Output:

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [0] => Array
                (
                    [id] => 1
                    [name] => Hardik
                    [state] => Gujarat
                    [country] => India
                )
            [3] => Array
                (
                    [id] => 4
                    [name] => John
                    [state] => New York
                    [country] => US
                )
        )
)

Example 3:

public function index()
{
  
    $myCollection = collect([
                    ['id'=>1, 'name'=>'Hardik', 'state'=>'Gujarat', 'country'=>'India'],
                    ['id'=>2, 'name'=>'Paresh', 'state'=>'Gujarat', 'country'=>'India'],
                    ['id'=>3, 'name'=>'Vimal', 'state'=>'MP', 'country'=>'India'],
                    ['id'=>4, 'name'=>'John', 'state'=>'New York', 'country'=>'US'],
                    ['id'=>5, 'name'=>'Ken', 'state'=>'New York', 'country'=>'US'],
                ]);
      
    $uniqueCollection = $myCollection->unique(function ($item) {
                            return $item['country'].$item['state'];
                        });
       
    $uniqueCollection->all();
      
    dd($uniqueCollection);
}

Output:

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [0] => Array
                (
                    [id] => 1
                    [name] => Hardik
                    [state] => Gujarat
                    [country] => India
                )
            [2] => Array
                (
                    [id] => 3
                    [name] => Vimal
                    [state] => MP
                    [country] => India
                )
            [3] => Array
                (
                    [id] => 4
                    [name] => John
                    [state] => New York
                    [country] => US
                )
        )
)

I hope it can help you...

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April 26, 2020 | Category : Laravel

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