Header (string, replace, http_response_code)
String is required. Specifies the header string to be sent.
Replace is optional. Indicates whether the header replaces the previous header or adds the second header.
The default value is true (replace ). False (multiple headers of the same type are allowed ).
Http_response_code is optional. Forces the http response code to the specified value. (Php 4 and later versions are available)
Jump
Header ('Location: http://www.111cn.net /');
Send http status
Header ("status: 404 not found ");
Set cache
Header ("cache-control: no-cache, must-revalidate"); // http/1.1
Header ("expires: sat, 26 jul 1997 05:00:00 gmt ");
Use the header for file download
*/
Header ("content-type: application/pdf ");
// The file will be called downloaded.pdf
Header ("content-disposition: attachment?filename='downloaded= '");
// The pdf source is in original.pdf
Readfile ("original.pdf ");
?>