persist(); } public function store( $index, $info ) { SessionManager::getGlobalSession()->set( 'captcha' . $index, $info ); } public function retrieve( $index ) { return SessionManager::getGlobalSession()->get( 'captcha' . $index, false ); } public function clear( $index ) { SessionManager::getGlobalSession()->remove( 'captcha' . $index ); } public function cookiesNeeded() { return true; } }