laravel password validation

1'password' => 'required|confirmed',
2
3reference : https://laravel.com/docs/4.2/validation#rule-confirmed
4
5The field under validation must have a matching field of foo_confirmation. 
6For example, if the field under validation is password, a matching
7password_confirmation field must be present in the input.

1'password' => 'required|
2               min:6|
3               regex:/^.*(?=.{3,})(?=.*[a-zA-Z])(?=.*[0-9])(?=.*[\d\x])(?=.*[!$#%]).*$/|
4               confirmed',
5

1$this->validate($request, [
2    'name' => 'required|min:3|max:50',
3    'email' => 'email',
4    'vat_number' => 'max:13',
5    'password' => 'required|confirmed|min:6',
6]);

1        $request->validate([
2            'email' =>'required|exists:users',
3            'password'=>'required|password'
4        ]);