| HeaderFactoryInterface | Interface for creating headers |
<?php
namespace Guzzle\Http\Message\Header;
/**
* Interface for creating headers
*/
interface HeaderFactoryInterface
{
/**
* Create a header from a header name and a single value
*
* @param string $header Name of the header to create
* @param string $value Value to set on the header
*
* @return HeaderInterface
*/
public function createHeader($header, $value = null);
}