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。

<?php2 /** 3 * php header函数用法举例
* 整理：www.jbxue.com
*/
// fix 404 pages: 
header(&#39;HTTP/1.1 200 OK&#39;); 
// set 404 header: 
header(&#39;HTTP/1.1 404 Not Found&#39;); 
// set Moved Permanently header (good for redrictions) 
// use with location header 
header(&#39;HTTP/1.1 301 Moved Permanently&#39;); 
// redirect to a new location: 
header(&#39;Location: http://www.jbxue.com/&#39;); 
// redrict with delay: 
header(&#39;Refresh: 10; url=http://www.jbxue.com/&#39;); 
print &#39;You will be redirected in 10 seconds&#39;; 
// you could also use the HTML syntax:// <meta http-equiv="refresh" content="10;http://www.jbxue.com/ /> 
// override X-Powered-By: PHP: 
header(&#39;X-Powered-By: PHP/4.4.0&#39;); 
header(&#39;X-Powered-By: Brain/0.6b&#39;); 
// content language (en = English) 
header(&#39;Content-language: en&#39;); 
// last modified (good for caching) 
$time = time() &ndash; 60; // or filemtime($fn), etc 
header(&#39;Last-Modified: &#39;.gmdate(&#39;D, d M Y H:i:s&#39;, $time).&#39; GMT&#39;); 
// header for telling the browser that the content 
// did not get changed 
header(&#39;HTTP/1.1 304 Not Modified&#39;); 
// set content length (good for caching): 
header(&#39;Content-Length: 1234&#39;); 
// Headers for an download: 
header(&#39;Content-Type: application/octet-stream&#39;); 
header(&#39;Content-Disposition: attachment; filename="example.zip"&#39;); 
header(&#39;Content-Transfer-Encoding: binary&#39;); 
// load the file to send:readfile(&#39;example.zip&#39;); 
// Disable caching of the current document: 
header(&#39;Cache-Control: no-cache, no-store, max-age=0, must-revalidate&#39;); 
header(&#39;Expires: Mon, 26 Jul 1997 05:00:00 GMT&#39;); 
// Date in the pastheader(&#39;Pragma: no-cache&#39;); 
// set content type: 
header(&#39;Content-Type: text/html; charset=iso-8859-1&#39;); 
header(&#39;Content-Type: text/html; charset=utf-8&#39;); 
header(&#39;Content-Type: text/plain&#39;); 
// plain text file 
header(&#39;Content-Type: image/jpeg&#39;); 
// JPG picture 
header(&#39;Content-Type: application/zip&#39;); 
// ZIP file 
header(&#39;Content-Type: application/pdf&#39;); 
// PDF file 
header(&#39;Content-Type: audio/mpeg&#39;); 
// Audio MPEG (MP3,&hellip;) file 
header(&#39;Content-Type: application/x-shockwave-flash&#39;); 
// Flash animation// show sign in box 
header(&#39;HTTP/1.1 401 Unauthorized&#39;); 
header(&#39;WWW-Authenticate: Basic realm="Top Secret"&#39;); 
print &#39;Text that will be displayed if the user hits cancel or &#39;; 
print &#39;enters wrong login data&#39;; 
?>