/**
* Check dates.
*
* @return bool
*/
public function isValid()
{
if (!parent::isValid()) {
return false;
}
if (!checkdate("-" . $this->getMonth(), $this->getDay(), $this->getYear())) {
throw new Exception("invalid date: " . $this->__toString());
}
return true;
}
/**
* Overload isValid to for additional date checks.
*
* @return bool
*/
public function isValid()
{
return checkdate($this->getMonth(), $this->getDay(), $this->getYear()) and parent::isValid();
}
