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
}