Date format validation in PHP

In case of date format checking in PHP just use this function:

function checkDateFormat($date)

{

  //match the format of the date

  if (preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $date, $parts))

  {

    //check weather the date is valid of not

        if(checkdate($parts[2],$parts[3],$parts[1]))

          return true;

        else

         return false;

  }

  else

    return false;

}

Example:

echo checkDateFormat("2008-02-29"); //return true

echo checkDateFormat("2007-02-29"); //return false