How to remove a parameter from all Request Objects at Controller Level in Laravel?

In Laravel, you can remove specific parameters from Request objects in your controller using several methods. This is useful for filtering unwanted data before processing or validation.

Using unset() Method

The simplest approach is using PHP's builtin unset() function to remove parameters directly from the request object ?

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;

class StudentController extends Controller
{
    public function validateform(Request $request) {
        print_r($request->all());
        unset($request['age']);
        print_r($request->all());
    }
}
?>

Array (
   [_token] => nUXVJ5adsFLADKC9RCbAJcdfYCRquy8GUkUCXtR8
   [name] => Rasika Desai
   [email] => rasika@gmail.com
   [age] => 20
   [address] => Pune
)

Array (
   [_token] => nUXVJ5adsFLADKC9RCbAJcdfYCRquy8GUkUCXtR8
   [name] => Rasika Desai
   [email] => rasika@gmail.com
   [address] => Pune
)

Using except() Method

The except() method returns a new array with all parameters except the specified ones. It doesn't modify the original request object ?

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;

class StudentController extends Controller
{
    public function validateform(Request $request) {
        $data = $request->except(['age', '_token']);
        print_r($data);
    }
}
?>

Array (
   [name] => Rasika Desai
   [email] => rasika@gmail.com
   [address] => Pune
)

Using only() Method

The only() method is the opposite of except() it returns only the specified parameters ?

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;

class StudentController extends Controller
{
    public function validateform(Request $request) {
        $data = $request->only(['name', 'email']);
        print_r($data);
    }
}
?>

Array (
   [name] => Rasika Desai
   [email] => rasika@gmail.com
)

Comparison

Conclusion

Use unset() to permanently remove parameters from the request object, except() to exclude unwanted fields, or only() to keep specific fields. The except() and only() methods are preferred as they don't modify the original request.