public function getAuthorizationCode() {

		if (isset($_GET['error'])) {
			throw new OAuthException($_GET['error'], 1);	
		} elseif (!isset($_GET['code']) || !isset($_GET['state'])) {
			throw new OAuthException('Invalid parameters', 2);
		} elseif (!isset($_SESSION[$this->oauth_key]['state'])) {
			throw new OAuthException('No state found', 3);
		} elseif ($_GET['state'] != $_SESSION[$this->oauth_key]['state']) {
			throw new OAuthException('State invalid', 4);
		}

		return $_GET['code'];
	}
public function getAuthorizationCode() {

		if (isset($_GET['error'])) {
			throw new OAuthException($_GET['error'], 1);	
		} elseif (!isset($_GET['code']) || !isset($_GET['state'])) {
			throw new OAuthException('Invalid parameters', 2);
		} elseif (!isset($_SESSION[$this->oauth_key]['state'])) {
			throw new OAuthException('No state found', 3);
		} elseif ($_GET['state'] != $_SESSION[$this->oauth_key]['state']) {
			throw new OAuthException('State invalid', 4);
		}

		return $_GET['code'];
	}
public function getAuthorizationCode ( ) { if ( isset ( $ _GET [ 'error' ] ) ) { throw new OAuthException ( $ _GET [ 'error' ] , 1 ) ; } elseif ( ! isset ( $ _GET [ 'code' ] ) || ! isset ( $ _GET [ 'state' ] ) ) { throw new OAuthException ( 'Invalid parameters' , 2 ) ; } elseif ( ! isset ( $ _SESSION [ $ this -> oauth_key ] [ 'state' ] ) ) { throw new OAuthException ( 'No state found' , 3 ) ; } elseif ( $ _GET [ 'state' ] != $ _SESSION [ $ this -> oauth_key ] [ 'state' ] ) { throw new OAuthException ( 'State invalid' , 4 ) ; } return $ _GET [ 'code' ] ; }
Obtain an authorization code.

@return string
@throws OAuthException
Obtain an authorization code .