I'm trying to use the Contacts API to retrieve all the contacts of the person who clicks on the <a> at the bottom of response-callback.php. I am using Google App Engine and within the GAE I enabled the Contacts API. I got this code by following a tutorial so it's rather hard to find errors myself. I haven't worked with either PHP or GAE or any API. This also why I can't debug and check if certain values are empty are not.
When I start the website up. I doesn't show anything. Not even the echo I am using to test if I can reach the response-callback.php nor the H2 is showing I just get a completely white page.
app.yaml:
application: csimporttest
version: 1
runtime: php55
api_version: 1
threadsafe: yes
handlers:
- url: /
script: main.php;
main.php:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<h2>Hi! Stackoverflow!</h2>
<?php include'response-callback.php';
echo "response-callback file: " $test;
?>
</body>
</html>
response-callback.php:
<?php
session_start();
require_once 'google-api-php-client/src/autoload.php';
$test = 'WORKS!';
$google_client_id = 'SECRET';
$google_client_secret = 'SECRET';
$google_redirect_uri = 'SECRET';
//setup new google client
$client = new Google_Client();
$client -> setApplicationName('csimporttest');
$client -> setClientid($google_client_id);
$client -> setClientSecret($google_client_secret);
$client -> setRedirectUri($google_redirect_uri);
$client -> setAccessType('online');
$client -> setScopes('https://www.googleapis.com/auth/contacts.readonly');
$googleImportUrl = $client -> createAuthUrl();
function curl($url, $post = "") {
$curl = curl_init();
$userAgent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)';
curl_setopt($curl, CURLOPT_URL, $url);
//The URL to fetch. This can also be set when initializing a session with curl_init().
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
//TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly.
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 5);
//The number of seconds to wait while trying to connect.
if ($post != "") {
curl_setopt($curl, CURLOPT_POST, 5);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post);
}
curl_setopt($curl, CURLOPT_USERAGENT, $userAgent);
//The contents of the "User-Agent: " header to be used in a HTTP request.
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, TRUE);
//To follow any "Location: " header that the server sends as part of the HTTP header.
curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE);
//To automatically set the Referer: field in requests where it follows a Location: redirect.
curl_setopt($curl, CURLOPT_TIMEOUT, 10);
//The maximum number of seconds to allow cURL functions to execute.
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
//To stop cURL from verifying the peer's certificate.
$contents = curl_exec($curl);
curl_close($curl);
return $contents;
}
if(isset($_SESSION['google_code'])) {
$auth_code = $_SESSION['google_code'];
$max_results = 200;
$fields=array(
'code'=> urlencode($auth_code),
'client_id'=> urlencode($google_client_id),
'client_secret'=> urlencode($google_client_secret),
'redirect_uri'=> urlencode($google_redirect_uri),
'grant_type'=> urlencode('authorization_code')
);
$post = '';
foreach($fields as $key=>$value)
{
$post .= $key.'='.$value.'&';
}
$post = rtrim($post,'&');
$result = curl('https://www.googleapis.com/oauth2/v4/token',$post);
$response = json_decode($result);
$accesstoken = $response->access_token;
$url = 'https://www.google.com/m8/feeds/contacts/default/full?max-results='.$max_results.'&alt=json&v=3.0&oauth_token='.$accesstoken;
$xmlresponse = curl($url);
$contacts = json_decode($xmlresponse,true);
$return = array();
if (!empty($contacts['feed']['entry'])) {
foreach($contacts['feed']['entry'] as $contact) {
//retrieve Name and email address
$return[] = array (
'name'=> $contact['title']['$t'],
'email' => $contact['gd$email'][0]['address'],
);
}
}
$google_contacts = $return;
unset($_SESSION['google_code']);
}
?>
<a href="<?php echo $googleImportUrl; ?>"> Import google contacts </a>
You can use an var_dump() to see if the array google_contacts is actually filled. Put this in the main.php:
<?php
var_dump($google_contacts);
?>
If you get an output in the var_dump you can use an html table and an easy foreach, look below:
<table border='1' class="table table-striped table-condensed">
<thead>
<tr>
<th>Naam </th>
<th>Email </th>
</tr>
</thead>
<tbody>
<?php
foreach ($google_contacts as $contacts){
echo'<tr>';
echo'<td>'. $contacts['name']."</td>";
echo'<td>'. $contacts['email'].'</td>';
echo'</tr>';
}
?>
</tbody>
</table>