PHP header()函数中可用的常量/值

php中header函数用法实例总结:  希望对你有帮助！
1. 页面没找到 Not Found 
header('HTTP/1.1 404 Not Found'); 
2. 用这个header指令来解决URL重写产生的404 header 
header('HTTP/1.1 200 OK'); 
3. 访问受限 
header('HTTP/1.1 403 Forbidden'); 
// The page moved permanently should be used for 
// all redrictions, because search engines know 
// what's going on and can easily update their urls. 
4. 页面被永久删除，可以告诉搜索引擎更新它们的urls 
header('HTTP/1.1 301 Moved Permanently'); 
5. 服务器错误 
header('HTTP/1.1 500 Internal Server Error'); 
6. 重定向到一个新的位置 
header('Location: http://www.example.org/');
7. 延迟一段时间后重定向 
header('Refresh: 10; url= http://www.example.org/');
echo 'You will be redirected in 10 seconds'; 
8. 加载要下载的文件: 
readfile('example.zip'); 
9. 也可以使用HTML语法来实现延迟 
header('Content-Transfer-Encoding: binary'); 
10. 禁止缓存当前文档: 
header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); 
header('Expires: Mon, 26 Jul 2010 05:00:00 GMT'); 
header('Pragma: no-cache'); 
11. 显示登录对话框，可以用来进行HTTP认证 
header('HTTP/1.1 401 Unauthorized'); 
header('WWW-Authenticate: Basic realm="Top Secret"'); 
echo 'Text that will be displayed if the user hits cancel or '; 
echo 'enters wrong login data'; 
12. 设置内容类型: 
header('Content-Type: text/html; charset=iso-8859-1'); 
header('Content-Type: text/html; charset=utf-8'); 
header('Content-Type: text/plain'); // plain text file 
header('Content-Type: image/jpeg'); // JPG picture 
header('Content-Type: application/zip'); // ZIP file 
header('Content-Type: application/pdf'); // PDF file 
header('Content-Type: audio/mpeg'); // Audio MPEG (MP3,...) file 
header('Content-Type: application/x-shockwave-flash'); // Flash animation

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