Calendar Event not Insert - php

Question

I have to work on google Calendar Insert API Without Login ...When I run this function that time did not event create On my account but it's function return "SUCCESS"
Also it Authentication is good. If you know please find a solution for that Question..thanks
XAMPP Localhost
require_once ('C:/xampp/htdocs/java_google/google-api-
php/src/Google/autoload.php');
$client_id = 'XXXXX'; //Client ID
$service_account_name = 'XXXXXX'; //Email Address
$key_file_location = 'C:/xampp/htdocs/java_google/java-new-257718-
70d76ac18661.p12'; //key.p12
$client = new Google_Client(); //AUTHORIZE OBJECTS
$client->setApplicationName("Java New");
//INSTATIATE NEEDED OBJECTS (In this case, for freeBusy query, and Create
New Event)
$service = new Google_Service_Calendar($client);
$id = new Google_Service_Calendar_FreeBusyRequestItem($client);
$item = new Google_Service_Calendar_FreeBusyRequest($client);
$event = new Google_Service_Calendar_Event($client);
$startT = new Google_Service_Calendar_EventDateTime($client);
$endT = new Google_Service_Calendar_EventDateTime($client);
if (isset($_SESSION['service_token'])) {
$client->setAccessToken($_SESSION['service_token']);
}
$key = file_get_contents($key_file_location);
$cred = new Google_Auth_AssertionCredentials(
$service_account_name,
array('https://www.googleapis.com/auth/calendar'),
$key
);
$client->setAssertionCredentials($cred);
if ($client->getAuth()->isAccessTokenExpired()) {
$client->getAuth()->refreshTokenWithAssertion($cred);
}
$_SESSION['service_token'] = $client->getAccessToken();
global $service;
global $event;
global $startT;
global $endT;
$calendarId = 'primary';
$summary = 'primary test test';
$location = 'chennai';
$description = 'chennai123';
$date = '2019-11-04T13:22:07+01:00';
$start = '2019-11-04T13:22:07+01:00';
$end = '2019-11-04T13:22:08+01:00';
$startT->setTimeZone("Europe/Rome");
$startT->setDateTime($date);
$endT->setTimeZone("Europe/Rome");
$endT->setDateTime($end);
$event->setSummary($summary);
$event->setLocation($location);
$event->setDescription($description);
$event->setStart($startT);
$event->setEnd($startT);
$insert = $service->events->insert($calendarId, $event);
if($insert) {
echo 'sucess';
return true;
}

Answer 1

Please Add Below Line On your Code
$scope = new Google_Service_Calendar_AclRuleScope($client);
$rule = new Google_Service_Calendar_AclRule($client);
$scope->setType('user');
$scope->setValue( 'your Email' );
$rule->setRole( 'owner' );
$rule->setScope( $scope );
$result = $service->acl->insert('primary', $rule);