PHP header several uses, you know several?
1. Jump page
Header (' Location: '. $url); // There is no space between location and ': '.
2. Declaration Content-type
Header (' Content-type:text/html;charset=utf-8 ');
3. Return Response status Code
Header (' http/1.1 404 Not Found ');
4. Perform a jump after a certain time
Header (' refresh:10; url=http://www.baidu.com/'); // jump after 10s.
5. Control browser Cache
Header ("Expires:mon, Jul 1997 05:00:00 GMT"); Header gmdate ("D, D M Y h:i:s"). "GMT"); Header ("Cache-control:no-cache, must-revalidate"); Header ("Pragma:no-cache");
6. Performing HTTP Authentication
Header (' http/1.1 401 Unauthorized '); Header (' Www-authenticate:basic realm= ' Top Secret ');
7. Perform the download operation
Header // Set Content Type Header // set MIME user as Attachment Header // Set Transfer Mode Header (' Content-length: '. filesize // Set Content Length
Several uses of the PHP header