How to use the header() function in php

This article mainly shares with you how to use the header() function in php. It mainly explains it to you in the form of code. I hope it can help you.

 跳转页面
header('Location:'.$url);  //Location和":"之间无空格。
2、 声明content-type
header('content-type:text/html;charset=utf-8');
3、 返回response状态码
header('HTTP/1.1 404 Not Found');
4、 在某个时间后执行跳转
header('Refresh: 10; url=http://www.baidu.com/');  //10s后跳转。

5. Control browser cache

Name	Meaning	Example
Expires	The date and time the response expires	Expires: Thu, 01 Dec 2010 16 :00:00 GMT
Last-Modified	The last modified time of the requested resource	Last-Modified: Tue, 15 Nov 2010 12:45:26 GMT
Cache-Control	Tells all caching mechanisms whether they can be cached and what type	Cache-Control: no-cache
Pragma	#Contains implementation-specific directives that can be applied to the response chain Any receiver	Pragma: no-cache

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");

#6. Perform http verification

Indicates the authorization scheme that the client requesting entity should useWWW-Authenticate: Basic

header('HTTP/1.1 401 Unauthorized');header('WWW-Authenticate: Basic realm="Top Secret"');

Name	Meaning	Example
##WWW-Authenticate

7. Perform download operation

NameMeaningExample##Content-Disposition

header('Content-Type: application/octet-stream'); //设置内容类型header('Content-Disposition: attachment; filename="example.zip"'); //设置MIME用户

The message header indicates in what form the reply content should be displayed, whether in inline form (that is, a web page or part of a page), or downloaded and saved as an attachment. to local.	Content-Disposition: attachment; filename="filename.jpg"

8.As an attachment

header('Content-Transfer-Encoding: binary'); //设置传输方式header('Content-Length: '.filesize('example.zip')); //设置内容长度

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