code: function AttachAll() {
          // Return text of body
          $mime = array();
  
          // Add all attachments
          for($i = 0; $i < count($this->attachment); $i++)
          {
              // Check for string attachment
              $bString = $this->attachment[$i][5];
              if ($bString)
                  $string = $this->attachment[$i][0];
              else
                  $path = $this->attachment[$i][0];
  
              $filename    = $this->attachment[$i][1];
              $name        = $this->attachment[$i][2];
              $encoding    = $this->attachment[$i][3];
              $type        = $this->attachment[$i][4];
              $disposition = $this->attachment[$i][6];
              $cid         = $this->attachment[$i][7];
              
              $mime[] = sprintf("--%s%s", $this->boundary[1], $this->LE);
              $mime[] = sprintf("Content-Type: %s; name=\"%s\"%s", $type, $name, $this->LE);
              $mime[] = sprintf("Content-Transfer-Encoding: %s%s", $encoding, $this->LE);
  
              if($disposition == "inline")
                  $mime[] = sprintf("Content-ID: <%s>%s", $cid, $this->LE);
  
              $mime[] = sprintf("Content-Disposition: %s; filename=\"%s\"%s", 
                                $disposition, $name, $this->LE.$this->LE);
  
              // Encode as string attachment
              if($bString)
              {
                  $mime[] = $this->EncodeString($string, $encoding);
                  if($this->IsError()) { return ""; }
                  $mime[] = $this->LE.$this->LE;
              }
              else
              {
                  $mime[] = $this->EncodeFile($path, $encoding);                
                  if($this->IsError()) { return ""; }
                  $mime[] = $this->LE.$this->LE;
              }
          }
  
          $mime[] = sprintf("--%s--%s", $this->boundary[1], $this->LE);
  
          return join("", $mime);
      }
docs: Attaches all fs, string, and binary attachments to the message.
  Returns an empty string on failure.
  @access private
  @return string