Laravel Collection Merge | How to Merge Two Eloquent Collection?

Hello Dev,

In this quick example, let's see laravel collection merge example. Here you will learn laravel collection merge by value. In this article, we will implement a laravel eloquent merge collections. you will learn eloquent merge collections.

I will explain you step by step example how to user merge collection in laravel. i will also give you example how to merge collection with unique in laravel 6, laravel 7, laravel 8, laravel 9, laravel 10 and laravel 11. i will also give you example of how to merge two eloquent laravel collection.

So, let's see bellow example.

Example 1:

public function index()
{
    $firstCollection = collect(['One', 'Two', 'Three']);
    $secondCollection = collect(['Four', 'Five']);
  
    $mergedCollection = $firstCollection->merge($secondCollection);
   
    $mergedCollection->all();
  
    dd($mergedCollection);
}

Output:

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [0] => One
            [1] => Two
            [2] => Three
            [3] => Four
            [4] => Five
        )
)

Example 2: Laravel Collection Merge Unique

public function index()
{
    $firstCollection = collect(['One', 'Two', 'Three']);
    $secondCollection = collect(['Three', 'Four', 'Five']);
  
    $mergedCollection = $firstCollection->merge($secondCollection);
  
    $mergedCollection = $mergedCollection->unique(function ($item) {
                        return $item;
                    });
  
    $mergedCollection->all();
  
    dd($mergedCollection);
}

Output:

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [0] => One
            [1] => Two
            [2] => Three
            [4] => Four
            [5] => Five
        )
)

Example 3: Laravel Eloquent Merge Collections

public function index()
{
    $firstCollection = Patient::get();
    $secondCollection = User::get();
  
    $mergedCollection = $firstCollection->merge($secondCollection);
   
    $mergedCollection->all();
}

I hope it can help you...