Nick Bartlett

// Option 1: Events can be deleted directly
$event->delete();
 
// Option 2: Events can be deleted supplying the edit URL of the event
// to the calendar service, if known
$service->delete($event->getEditLink()->href);

$event = $cal->addEvent(/* my own method that adds the event and returns instance of Zend_Gdata_Calendar_EventEntry */);
 
$link = $event->getEditLink()->href;
 
function deleteEventByEditLink($link) {
	$client = getClient();
	$service = new Zend_Gdata_Calendar($client);
 
	try {
		$response = $service->delete($link);
	} catch(Exception $e) {
		//event most likely didn't exist on the calendar. 
		return false;
	}
	return true;
}
 
function getClient() {
	return Zend_Gdata_ClientLogin::getHttpClient(GOOGLE_CALENDAR_USERNAME, GOOGLE_CALENDAR_PASSWORD, Zend_Gdata_Calendar::AUTH_SERVICE_NAME);
}

/* after adding, extract and save the event id */
$event = $cal->addEvent();
$eventId = $event->id->text;
 
/* deleting */
$result = deleteEventById($eventId);
 
function deleteEventById($eventId) {
	$event = getEventById($eventId);
	try {
		$response = $event->delete();
	} catch(Exception $e) {
		//event most likely didn't exist on the calendar. 
		return false;
	}
	return true;
}
 
function getEventById($eventId) {
	// Create an authenticated HTTP client
	$client = getClient();
	$service = new Zend_Gdata_Calendar($client);
	try {
		return $service->getCalendarEventEntry($eventId);
	} catch (Zend_Gdata_App_Exception $e) {
		echo "Error: " . $e->getMessage();
	}
}
 
function getClient() {
	return Zend_Gdata_ClientLogin::getHttpClient(GOOGLE_CALENDAR_USERNAME, GOOGLE_CALENDAR_PASSWORD, Zend_Gdata_Calendar::AUTH_SERVICE_NAME);
}