<h3>OAuth 2 Authorization Example</h3>
<?php
// print any error from Constant Contact that occurs during the authorization process
if (isset($_GET['error'])) {
echo '<span class="label label-important">OAuth2 Error!</span>';
echo '<div class="container alert-error"><pre class="failure-pre">';
echo 'Error: ' . $_GET['error'];
echo '<br />Description: ' . $_GET['error_description'];
echo '</pre></div>';
die;
}
// If the 'code' query parameter is present in the uri, the code can exchanged for an access token
if (isset($_GET['code'])) {
try {
$accessToken = $oauth->getAccessToken($_GET['code']);
} catch (OAuth2Exception $ex) {
echo '<span class="label label-important">OAuth2 Error!</span>';
echo '<div class="container alert-error"><pre class="failure-pre">';
echo 'Error: ' . $ex->getMessage();
echo '</pre></div>';
die;
}
echo '<span class="label label-success">Access Token Retrieved!</span>';
echo '<div class="container alert-success"><pre class="success-pre">';
print_r($accessToken);
echo '</pre></div>';
} else {
?>
<!-- If the 'code' query parameter is not present, display the link the user needs to visit to initiate the oauth flow -->
<button class="btn btn-primary" type="button"
