function index()
 {
     //Create object of Simple_html_dom class
     $html = new Simple_html_dom();
     //use Simple_html_dom class function load_file
     $html->load_file('http://www.google.com');
     //use Simple_html_dom class function find
     foreach ($html->find('img') as $element) {
         echo $element->src . '<br>';
     }
 }
 /**
  * getCaptchaToken()
  * @return boolean/Array
  */
 private function getCaptchaToken()
 {
     $ch = curl_init('http://www.receita.fazenda.gov.br/pessoajuridica/cnpj/cnpjreva/Cnpjreva_Solicitacao2.asp?cnpj=');
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($ch, CURLOPT_COOKIEJAR, $this->cookieFile);
     $htmlResult = curl_exec($ch);
     if (!$htmlResult) {
         return false;
     }
     $html = new Simple_html_dom($htmlResult);
     $url_imagem = $tokenValue = '';
     $imgcaptcha = $html->find('img[id=imgcaptcha]');
     if (count($imgcaptcha)) {
         foreach ($imgcaptcha as $imgAttr) {
             $url_imagem = $imgAttr->src;
         }
         if (preg_match('#guid=(.*)$#', $url_imagem, $arr)) {
             $idCaptcha = $arr[1];
             $viewstate = $html->find('input[id=viewstate]');
             if (count($viewstate)) {
                 foreach ($viewstate as $inputViewstate) {
                     $tokenValue = $inputViewstate->value;
                 }
             }
             if (!empty($idCaptcha) && !empty($tokenValue)) {
                 return array($idCaptcha, $tokenValue);
             } else {
                 return false;
             }
         }
     }
 }