盘点HTTP协议header标头在php中header函数有哪些
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
// whats 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 .example.org/’);
7. 延迟一段时间后重定向
header(‘Refresh 10 url=.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 050000 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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