form validation in laravel 7 code example

Example 1: laravel validation example

//import		
		use Illuminate\Support\Facades\Validator;
	
		// single var check
        $validator = Validator::make(['data' => $value],
            ['data' => 'string|min:1|max:10']
        );
        if ($validator->fails()) {
            // your code
        }

        // array check
        $validator = Validator::make(['data' => $array],
            ['email' => 'string|min:1|max:10'],
            ['username' => 'string|min:1|max:10'],
            ['password' => 'string|min:1|max:10'],
            ['...' => '...']
        );

        if ($validator->fails()) {
            // your code
        }

Example 2: laravel validation

/**
 * Bootstrap any application services.
 *
 * @return void
 */
public function boot()
{
    Validator::extend(...);

    Validator::replacer('foo', function ($message, $attribute, $rule, $parameters) {
        return str_replace(...);
    });
}

Example 3: laravel validation

Rule::unique('users')->ignore($user)