Unable to delete events in Google Calendar using php api - php

Question

I am working on the PHP API to Google Calendar, I have previously used the Zend library and I am upgrading to the API V3 I downloaded the Git Hub client library v1.0.
I have completed oAuth 2 and I am storing Refresh tokens in a database. I can connect and write events to Google Calendar, thanks mainly to the contributors at StackOverflow. Thanks
My problem is that I cannot delete events. I am connecting with oAuth 2 and retrieving event Ids however
$service->events->delete('primary', $event->getId());
This generates Fatal error: Uncaught exception 'Google_IO_Exception' with message 'HTTP Error: Unable to connect: '0'' in C:\wamp\www\new-roster-decoder\src\Google\IO\Stream.php on line 128
I have hunted high and low and been unable to find a solution. Please help Thanks
EDITED AS SOLVED
Due to Emily's great advice this is solved
Solution downloaded the latest API from GitHub as the problem of GZIP has been sorted.
As a matter of interest I initially commented out GZIP in congig.php and this fixed it, but I then lost the performance benefits, then new library sorted it.
Lessons learnt. Stackoverflow users are very kind to give their time, and always try the lastest software
END OF EDIT
<?php
/// This works
session_start();
set_include_path("src/" . PATH_SEPARATOR . get_include_path());
require_once 'Google/Client.php';
require_once 'Google/Service/Calendar.php';
require_once 'account/dbc.php';
$client_id = 'XXXXXXXXXX.apps.googleusercontent.com';
$client_secret = 'XXXXXXXXXXX';
$redirect_uri = 'http://localhost:80/new-roster-decoder/account/GoogleoAuth.php';
$client = new Google_Client();
$client->setClientId($client_id);
$client->setClientSecret($client_secret);
$client->setRedirectUri($redirect_uri);
$client->addScope("https://www.googleapis.com/auth/calendar");
$client->setAccessType('offline');
$users_rs_settings = mysqli_query($link,"select * from users WHERE id = 118");
$users_array = mysqli_fetch_array($users_rs_settings);
$refresh_token = $users_array['refresh_token']; //2010-04-06
$client->refreshToken($refresh_token);
$service = new Google_Service_Calendar($client);
$event = new Google_Service_Calendar_Event();
$event->setSummary('Positioning TX');
$event->setLocation('BRS-LGW');
$start = new Google_Service_Calendar_EventDateTime();
$start->setDateTime('2014-02-19T14:00:00.000-00:00');
$start->setTimeZone('Europe/London');
$event->setStart($start);
$end = new Google_Service_Calendar_EventDateTime();
$end->setDateTime('2014-02-19T17:25:00.000-00:00');
$end->setTimeZone('Europe/London');
$event->setEnd($end);
// insert ext properties
$rdname = "RosterDecoderID";
$rdvalue = 1;
$extendedProperties = New Google_Service_Calendar_EventExtendedProperties();
$extendedProperties->setPrivate(array($rdname=>$rdvalue));
$event->setExtendedProperties($extendedProperties);
// end of insert ext properties
$createdEvent = $service->events->insert('primary', $event);
echo $createdEvent->getId()."\n\n";
$_SESSION['access_token'] = $client->getAccessToken();
var_dump($_SESSION['access_token']);
var_dump($event);
$minCheck = date(DATE_ATOM, mktime(0, 0, 0, date("m"), date("d"), date("Y") ));
$maxCheck = date(DATE_ATOM, mktime(0, 0, 0, date("m"), (date("d")+1), date("Y") ));
$optParams = array( 'privateExtendedProperty' => 'RosterDecoderID=1','timeMin' => $minCheck, 'timeMax' => $maxCheck);
$events = $service->events->listEvents('primary', $optParams);
while(true) {
foreach ($events->getItems() as $event) {
$eventID = $event->getId();
//////////////////////////////////////////////////////////
//This bit throws an error
$service->events->delete('primary', $event->getId());
/////////////////////////////////////////////////////////
// The error is
// Fatal error: Uncaught exception 'Google_IO_Exception' with message 'HTTP Error: Unable to connect: '0'' in C:\wamp\www\new-roster-decoder\src\Google\IO\Stream.php on line 128
echo $event->getSummary();
echo $event->getId()."\n\n";
}
}
?>

Answer 1

I am able to delete event from google calendar..
use private key file you get from developer console.
Fore more info check this link
What is the Google API password for the OAuth PKCS p12 private key?
how-where-to-obtain-a-p12-key-file-from-the-google-developers-console
below is code please check
const KEY_FILE = '<<some location on server>>/xxx-65454f656a-xxx-560265d-privatekey.p12';
// this is my private key file location, make sure it accessible
try {
$key = file_get_contents(KEY_FILE);
$auth = new \Google_Auth_AssertionCredentials(
SERVICE_ACCOUNT_NAME,
array('https://www.googleapis.com/auth/calendar'),
$key);
$auth->sub = $calendarId;
$client = new \Google_Client();
$client->setAssertionCredentials($auth);
$client->setApplicationName("Parabola V2");
$client->setClientId(CLIENT_ID);
$service = new \Google_Service_Calendar($client);
$service->events->delete($calendarId, $eventId);
} catch (\Exception $e) {
echo "Exception while deleting event :- ".$e->getMessage();
return null;
}

Answer 2

$service->events->delete('primary', $event->getId());
'primary' must be the calendar id
"myname#gmail.com" or "mhggf54gfh5#group.calendar.google.com"
thats how it work for me