Symfony 2 - Validate Date

symfony_validate_date.php

<?php
private function validateDate($date, $format = 'd-m-Y')
{
  $d = \DateTime::createFromFormat($format, $date);
  return $d && $d->format($format) == $date;
}
    
if ($this->validateDate($dueDate) == true) {
  $todo->setDueDate(\DateTime::createFromFormat('d-m-Y', $dueDate));
}