Mail_mimePart Mail_mimePart ( 
      string 
       $body = ''
      
       , array 
       $params = array()
      
     )
Create a new Mail_mimePart object.
        string $body - 
        The body of the mime part if any. Default is an empty string.
       
        array $params - 
        An associative array of parameters:
        
           $params["content_type"] - 
           The content type for this part ie.
           multipart/mixed
          
           $params["encoding"] - 
           The encoding to use ie. 7bit, 
           8bit, base64 or 
           quoted-printable
          
           $params["cid"] - 
           content ID to apply
          
           $params["disposition"] - 
           Content disposition inline 
           or attachment
          
           $params["filename"] - 
           Optional filename parameter for content disposition
          
           $params["description"] - 
           Content description
          
           $params["charset"] - 
           Character set to use
          
           $params["name_encoding"] -
           Encoding of the attachment name (Content-Type)
           By default filenames are encoded using RFC2231
           Here you can set RFC2047 encoding (quoted-printable
           or base64) instead
          
           $params["filename_encoding"] -
           Encoding of the attachment filename (Content-Disposition)
          
           $params["headers_charset"] -
           Charset of the headers e.g. filename, description
           If not set, "charset" will be used
          
           $params["eol"] -
           End of line sequence. Default: "\r\n"
          
           $params["body_file"] -
           Location of file with part's body (instead of $body)
          
Default is an empty array.
This function can be called statically.