make custom validation laravel code example

Example 1: displaying errors in laravel

@if(count($errors) > 0)
<div class="p-1">
    @foreach($errors->all() as $error)
    <div class="alert alert-warning alert-danger fade show" role="alert">{{$error}} <button type="button" class="close"
            data-dismiss="alert" aria-label="Close">
            <span aria-hidden="true">&times;</span>
        </button></div>
    @endforeach
</div>
@endif

Example 2: 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 3: laravel validation

Validator::extend('foo', 'FooValidator@validate');