PHPheader function analysis

PHP only sends the HTML document header to the browser using the HTTP protocol to tell the browser how to handle the page. As for the transmitted content, you need to familiarize yourself with the HTTP protocol, PHP is irrelevant. in php, the header () function is very useful. especially when ajax is used, it will help you solve unexpected problems. The following is a detailed description of the header. Hope to be helpful to phper

The code is as follows:

// 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 :// 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 ';
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