Insert event to Google Calendar using php - php

Question

I'm trying to perform a cURL request to google calendar api using their guide, that says:
POST https://www.googleapis.com/calendar/v3/calendars/{name_of_my_calendar}/events?sendNotifications=true&pp=1&key={YOUR_API_KEY}
Content-Type: application/json
Authorization: OAuth 1/SuypHO0rNsURWvMXQ559Mfm9Vbd4zWvVQ8UIR76nlJ0
X-JavaScript-User-Agent: Google APIs Explorer
{
"start": {
"dateTime": "2012-06-03T10:00:00.000-07:00"
},
"end": {
"dateTime": "2012-06-03T10:20:00.000-07:00"
},
"summary": "my_summary",
"description": "my_description"
}
How am I supposed to do that in php? I wonder what parameters I should send and what constants I should use. I'm currently doing:
$url = "https://www.googleapis.com/calendar/v3/calendars/".urlencode('{name_of_my_calendar}')."/events?sendNotifications=true&pp=1&key={my_api_key}";
$post_data = array(
"start" => array("dateTime" => "2012-06-01T10:00:00.000-07:00"),
"end" => array("dateTime" => "2012-06-01T10:40:00.000-07:00"),
"summary" => "my_summary",
"description" => "my_description"
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
// adding the post variables to the request
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
$output = curl_exec($ch);
curl_close($ch);
but the response is:
{
error: {
errors: [
{
domain: "global",
reason: "required",
message: "Login Required",
locationType: "header",
location: "Authorization"
}
],
code: 401,
message: "Login Required"
}
}
How should I format my parameters?

Answer 1

I noticed this question is asked quite some time ago, however after figuring out the post-parameter problem after some time I thought it might be useful to others to answer it. First within '$post_data', I switched the 'start' and 'end':
$post_data = array(
"end" => array("dateTime" => "2012-06-01T10:40:00.000-07:00"),
"start" => array("dateTime" => "2012-06-01T10:00:00.000-07:00"),
"summary" => "my_summary",
"description" => "my_description"
);
Secondly, I figured Google Calendar API expected the data to be json, so in curl_setopt:
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($post_data));
This worked perfectly for me, hope it's useful to someone else as well!