PHP header Function Analysis

In php, the header () function is very useful, especially when ajax is used, it will help you solve some unexpected problems. The following is a detailed description of the header. Hope to be helpful to phper
Copy codeThe Code is as follows:
<? Php
// Fix 404 pages:
Header ('HTTP/1.1 200 OK ');
// Set 404 header:
Header ('HTTP/1.1 404 Not Found ');
// Set Moved Permanently header (good for redrictions)
// Use with location header
Header ('HTTP/1.1 301 Moved Permanently ');
// Redirect to a new location:
Header ('location: http://www.example.org /');
// Redrict with delay:
Header ('refresh: 10; url = http://www.example.org /');
Print 'you will be redirected in 10 seconds ';
// You cocould also use the HTML syntax: // <meta http-equiv = "refresh" content = "10; http://www.example.org //>
// Override X-Powered-By: PHP:
Header ('x-Powered-By: PHP/4.4.0 ');
Header ('x-Powered-By: Brain/0.6b ');
// Content language (en = English)
Header ('content-language: en ');
// Last modified (good for caching)
$ Time = time ()-60; // or filemtime ($ fn), etc
Header ('Last-Modified: '. gmdate ('d, d m y h: I: s', $ time). 'gmt ');
// Header for telling the browser that the content
// Did not get changed
Header ('HTTP/1.1 304 Not modified ');
// Set content length (good for caching ):
Header ('content-Length: 1234 ');
// Headers for an download:
Header ('content-Type: application/octet-stream ');
Header ('content-Disposition: attachment; filename = "example.zip "');
Header ('content-Transfer-Encoding: binary ');
// Load the file to send: readfile('example.zip ');
// Disable caching of the current document:
Header ('cache-Control: no-Cache, no-store, max-age = 0, must-revalidate ');
Header ('expires: Mon, 26 Jul 1997 05:00:00 gmt ');
// Date in the pastheader ('pragma: no-cache ');
// Set content type:
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 // show sign in box
Header ('HTTP/1.1 401 unauthorized ');
Header ('www-Authenticate: Basic realm = "Top Secret "');
Print 'text that will be displayed if the user hits cancel or ';
Print 'enters wrong login data ';
?>