SetIdentifier($_POST['openid_identifier']);
try {
$oid->DiscoverEndpoint();
} catch (OpenIDException $e) {
// If we fail to discover an endpoint, exit
echo $e->getMessage();
die();
}
// You can cache the endpoint locally, in that case use OpenID::GetEndpoint()
// and cache it locally and use OpenID::SetEndpoint(endpoint) instead of OpenID::DiscoverEndpooint()
// Set where we want the user to be send after the OP did the login
$oid->SetReturnTo('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']);
// Optional, set authentification realm, see http://openid.net/specs/openid-authentication-2_0.html#realms
$oid->SetRealm('http://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['PHP_SELF']));
// Redirect user to OP
// You can also use OpenID::GetRequestAuthentificationURL() and redirect the user yourself
$oid->RedirectUser();
} elseif($oid->IsResponse()) {
// We got a reply from an openid provider
// Get the openid.mode and check if it is id_res (i.e. successful login)
$mode = $oid->GetResponseMode();
if ($mode == 'id_res') {
// Login successfull, now verify the login
try {
if($oid->VerifyAssertion()) {
// Now start a session for the user, save to DB or whatever
echo "Login successful";
} else {
echo "Login failed";
}
} catch (OpenIDException $e) {
// If the data cechks are invalid, or we fail to contact the OP
$status = false;
echo "Failed to verify your login: " . $e->getMessage() . '
';
}
} else {
// Refer to http://openid.net/specs/openid-authentication-2_0.html#negative_assertions if you need to further handle negative responses
echo "Login failed: " . $mode;
}
} else {
?>
OpenID Example Login