How to use the header() function in php-PHP Tutorial-php.cn

How to use the header() function in php

小云云

Release： 2023-03-22 15:40:01

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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(&#39;Location:&#39;.$url);  //Location和":"之间无空格。
2、 声明content-type
header(&#39;content-type:text/html;charset=utf-8&#39;);
3、 返回response状态码
header(&#39;HTTP/1.1 404 Not Found&#39;);
4、 在某个时间后执行跳转
header(&#39;Refresh: 10; url=http://www.baidu.com/&#39;);  //10s后跳转。

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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");

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#6. Perform http verification

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

header(&#39;HTTP/1.1 401 Unauthorized&#39;);header(&#39;WWW-Authenticate: Basic realm="Top Secret"&#39;);

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Name	Meaning	Example
##WWW-Authenticate

7. Perform download operation

NameMeaningExample##Content-Disposition

header(&#39;Content-Type: application/octet-stream&#39;); //设置内容类型header(&#39;Content-Disposition: attachment; filename="example.zip"&#39;); //设置MIME用户

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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(&#39;Content-Transfer-Encoding: binary&#39;); //设置传输方式header(&#39;Content-Length: &#39;.filesize(&#39;example.zip&#39;)); //设置内容长度
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