function ReadMetaTags($html)
{
//! @return void
//! @desc Pass meta tag info to PDF file properties
$regexp = '/ (\\w+?)=([^\\s>"]+)/si'; // changes anykey=anyvalue to anykey="anyvalue" (only do this when this happens inside tags)
  $html = preg_replace($regexp," \$1=\"\$2\"",$html);
  $regexp = '/<meta .*?(name|content)="(.*?)" .*?(name|content)="(.*?)".*?>/si';
  preg_match_all($regexp,$html,$aux);
 
  $firstattr = $aux[1];
  $secondattr = $aux[3];
  for( $i = 0 ; $i < count($aux[0]) ; $i++)
  {

     $name = ( strtoupper($firstattr[$i]) == "NAME" )? strtoupper($aux[2][$i]) : strtoupper($aux[4][$i]);
     $content = ( strtoupper($firstattr[$i]) == "CONTENT" )? $aux[2][$i] : $aux[4][$i];
     switch($name)
     {
       case "KEYWORDS": $this->SetKeywords($content); break;
       case "AUTHOR": $this->SetAuthor($content); break;
       case "DESCRIPTION": $this->SetSubject($content); break;
     }
  }
  //Comercial do Aplicativo usado (no caso um script):
  $this->SetCreator("HTML2FPDF >> http://html2fpdf.sf.net");
}