PHP header函数使用教程

在php语言中，header()这个函数很有用的，尤其在用到ajax时。

下面是header的一些详细讲解。  

 1 <?php

 /**

 3 * php header函数用法举例
 4 * 整理：www.jbxue.com
 5 */
 6 // fix 404 pages: 
 7 header('HTTP/1.1 200 OK'); 
 8 // set 404 header: 
 9 header('HTTP/1.1 404 Not Found'); 
10 // set Moved Permanently header (good for redrictions) 
11 // use with location header 
12 header('HTTP/1.1 301 Moved Permanently'); 
13 // redirect to a new location: 
14 header('Location: http://www.jbxue.com/'); 
15 // redrict with delay: 
16 header('Refresh: 10; url=http://www.jbxue.com/'); 
17 print 'You will be redirected in 10 seconds'; 
18 // you could also use the HTML syntax:// <meta http-equiv="refresh" content="10;http://www.jbxue.com/ /> 
19 // override X-Powered-By: PHP: 
20 header('X-Powered-By: PHP/4.4.0'); 
21 header('X-Powered-By: Brain/0.6b'); 
22 // content language (en = English) 
23 header('Content-language: en'); 
24 // last modified (good for caching) 
25 $time = time() – 60; // or filemtime($fn), etc 
26 header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT'); 
27 // header for telling the browser that the content 
28 // did not get changed 
29 header('HTTP/1.1 304 Not Modified'); 
30 // set content length (good for caching): 
31 header('Content-Length: 1234'); 
32 // Headers for an download: 
33 header('Content-Type: application/octet-stream'); 
34 header('Content-Disposition: attachment; filename="example.zip"'); 
35 header('Content-Transfer-Encoding: binary'); 
36 // load the file to send:readfile('example.zip'); 
37 // Disable caching of the current document: 
38 header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); 
39 header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); 
40 // Date in the pastheader('Pragma: no-cache'); 
41 // set content type: 
42 header('Content-Type: text/html; charset=iso-8859-1'); 
43 header('Content-Type: text/html; charset=utf-8'); 
44 header('Content-Type: text/plain'); 
45 // plain text file 
46 header('Content-Type: image/jpeg'); 
47 // JPG picture 
48 header('Content-Type: application/zip'); 
49 // ZIP file 
50 header('Content-Type: application/pdf'); 
51 // PDF file 
52 header('Content-Type: audio/mpeg'); 
53 // Audio MPEG (MP3,…) file 
54 header('Content-Type: application/x-shockwave-flash'); 
55 // Flash animation// show sign in box 
56 header('HTTP/1.1 401 Unauthorized'); 
57 header('WWW-Authenticate: Basic realm="Top Secret"'); 
58 print 'Text that will be displayed if the user hits cancel or '; 
59 print 'enters wrong login data'; 
60 ?>