1<?php 2/** 3 * Zend Framework (http://framework.zend.com/) 4 * 5 * @link http://github.com/zendframework/zf2 for the canonical source repository 6 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) 7 * @license http://framework.zend.com/license/new-bsd New BSD License 8 */ 9 10namespace Zend\Http\Header; 11 12/** 13 * Interface for HTTP Header classes. 14 */ 15interface HeaderInterface 16{ 17 /** 18 * Factory to generate a header object from a string 19 * 20 * @param string $headerLine 21 * @return self 22 * @throws Exception\InvalidArgumentException If the header does not match RFC 2616 definition. 23 * @see http://tools.ietf.org/html/rfc2616#section-4.2 24 */ 25 public static function fromString($headerLine); 26 27 /** 28 * Retrieve header name 29 * 30 * @return string 31 */ 32 public function getFieldName(); 33 34 /** 35 * Retrieve header value 36 * 37 * @return string 38 */ 39 public function getFieldValue(); 40 41 /** 42 * Cast to string 43 * 44 * Returns in form of "NAME: VALUE" 45 * 46 * @return string 47 */ 48 public function toString(); 49} 50