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Here, we will learn how to use collection filter method in laravel application. i would like to give you simple examples of laravel collection filter method. we will use collection filter method by key, by value and remove null and empty values. we can easily use with laravel 5, laravel 6, laravel 7, laravel 8, laravel 9, laravel 10 and laravel 11 application.

Laravel Collection object provide several methods that will help to write your own logic. here we will learn how to use filter method of laravel collection.

In this example i will give you two example one with multidimensional array collection object with filter pass student. Another example we be simple example that will help you to remove null, empty, empty array value from collection object.

You can use collection filter like as bellow syntax:

filter()

filter(function( 'You can write logic here' ))

Now we will see both examples bellow:

Example 1:

public function index()
{
    $myStudents = [
        ['id'=>1, 'name'=>'Hardik', 'mark' => 80],
        ['id'=>2, 'name'=>'Paresh', 'mark' => 20],
        ['id'=>3, 'name'=>'Akash', 'mark' => 34],
        ['id'=>4, 'name'=>'Sagar', 'mark' => 45],
    ];
  
    $myStudents = collect($myStudents);
   
    $passedstudents = $myStudents->filter(function ($value, $key) {
        return data_get($value, 'mark') > 34;
    });
   
    $passedstudents = $passedstudents->all();
   
    dd($passedstudents);
}

Output:

array:2 [▼
  0 => array:3 [▼
    "id" => 1
    "name" => "Hardik"
    "mark" => 80
  ]
  3 => array:3 [▼
    "id" => 4
    "name" => "Sagar"
    "mark" => 45
  ]
]

Example 2:

public function index()
{
    $myArray = collect([2, 3, 5, null, false, '', 0, []]);
  
    $myfilterArray = $myArray->filter()->all();
  
    dd($myfilterArray);
}

Output:

array:3 [▼
  0 => 2
  1 => 3
  2 => 5
]

I hope it can help you...