use Symfony\Component\Validator\Validation;

use Symfony\Component\Validator\Constraints as Assert;

​

// Get the validator service

$validator = Validation::createValidator();

​

// Define your validation constraints

$constraints = new Assert\Collection([

    'email' => [

        new Assert\Email(),

        new Assert\NotBlank(),

    ],

    'message' => [

        new Assert\Length([

            'min' => 10,

            'minMessage' => 'Your message should be at least {{ limit }} characters long',

        ]),

    ],

]);

​

// Validate the data

$violations = $validator->validate($data, $constraints);

​

if (count($violations) > 0) {

    // There are validation errors, handle them

} else {

    // The data is valid, continue with processing

}