409 Conflict about php-transmission-class HOT 1 OPEN

I resolved this problem as follows:
...
    // Check the response (headers etc)
    $stream_meta = stream_get_meta_data( $fp );

    if( isset( $stream_meta['wrapper_data']['headers'] )) $stream_headers = $stream_meta['wrapper_data']['headers'];
    else $stream_headers = $stream_meta['wrapper_data'];

    fclose( $fp );
    if( $this->debug ) echo "TRANSMISSIONRPC_DEBUG:: GetSessionID():: Stream meta info: ".
                            PHP_EOL . print_r( $stream_meta, true );
    if( $stream_meta['timed_out'] )
      throw new TransmissionRPCException( "Timed out connecting to {$this->url}", TransmissionRPCException::E_CONNECTION );
    if( substr( $stream_headers[0], 9, 3 ) == "401" )
      throw new TransmissionRPCException( "Invalid username/password.", TransmissionRPCException::E_AUTHENTICATION );
    elseif( substr( $stream_headers[0], 9, 3 ) == "409" )  // This is what we're hoping to find
    {
      // Loop through the returned headers and extract the X-Transmission-Session-Id
      foreach( $stream_headers as $header )
      {
...