name : DateValidator.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Validator\Constraints; use Symfony\Component\Validator\Constraint; use Symfony\Component\Validator\ConstraintValidator; use Symfony\Component\Validator\Exception\UnexpectedTypeException; /** * @author Bernhard Schussek <bschussek@gmail.com> * * @api */ class DateValidator extends ConstraintValidator { const PATTERN = '/^(\d{4})-(\d{2})-(\d{2})$/'; /** * {@inheritDoc} */ public function validate($value, Constraint $constraint) { if (null === $value || '' === $value || $value instanceof \DateTime) { return; } if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) { throw new UnexpectedTypeException($value, 'string'); } $value = (string) $value; if (!preg_match(static::PATTERN, $value, $matches) || !checkdate($matches[2], $matches[3], $matches[1])) { $this->context->addViolation($constraint->message, array('{{ value }}' => $value)); } } }