lithium\action\Response::_writeHeaders()
Writes raw headers to output.
Parameters
- 
							string|array
							$headersEither a raw header string, or an array of header strings. Use an array if a single header must be written multiple times with different values. Otherwise, additional values for duplicate headers will overwrite previous values. 
- 
							integer
							$codeOptional. If present, forces a specific HTTP response code. Used primarily in conjunction with the 'Location' header. 
Returns
voidSource
	protected function _writeHeaders($headers, $code = null) {
		foreach ((array) $headers as $header) {
			$code ? header($header, false, $code) : header($header, false);
		}
	}