Pro PHP and jQuery by Jason Lengstorf.pdf - Computer Science ...

334
CHAPTER 9 ■ PERFORMING FORM VALIDATION WITH REGULAR EXPRESSIONS
}
?>
}
*/
$pattern = '/^(\d{4}(-\d{2}){2} (\d{2})(:\d{2}){2})$/';
/*
* If a match is found, return TRUE. FALSE otherwise.
*/
return preg_match($pattern, $date)==1 ? TRUE : FALSE;
private function _loadEventData($id=NULL) {...}
private function _createEventObj() {...}
private function _loadEventById($id) {...}
private function _adminGeneralOptions() {...}
private function _adminEntryOptions($id) {...}
Returning an Error if the Dates Don’t Validate
Your next step is to modify the processForm() method so it calls the _validDate() method on both the
start and end times for new entries. If the validation fails, simply return an error message.
Add the following bold code to processForm() to implement the validation: