Summary of commonly used header header definitions in PHP_PHP tutorial

A summary of commonly used header definitions in PHP

This article mainly gives you a summary of the commonly used header definitions in PHP. It is very comprehensive and detailed. Friends who need it You can refer to it.

The header() function sends raw HTTP headers to the client.

It is important to realize that the header() function must be called before any actual output is sent (in PHP 4 and above, you can use output caching to solve this problem):

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header('HTTP/1.1 200 OK'); // ok normal access header('HTTP/1.1 404 Not Found'); //Notify the browser that the page does not exist header('HTTP/1.1 301 Moved Permanently'); //Set the address to be permanently redirected 301 header('Location: http://www.ithhc.cn/'); //Jump to a new address header('Refresh: 10; url=http://www.ithhc.cn/'); //Delayed redirection, that is, jump every few seconds header('X-Powered-By: PHP/6.0.0'); //Modify X-Powered-By information header('Content-language: en'); //Document language header('Content-Length: 1234'); //Set content length header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT'); //Tell the browser the last modification time header('HTTP/1.1 304 Not Modified'); //Tell the browser that the document content has not changed ###Content Type### header('Content-Type: text/html; charset=utf-8'); //Web page encoding header('Content-Type: text/plain'); //Plain text format header('Content-Type: image/jpeg'); //JPG, JPEG header('Content-Type: application/zip'); // ZIP file header('Content-Type: application/pdf'); // PDF file header('Content-Type: audio/mpeg'); // Audio file header('Content-type: text/css'); //css file header('Content-type: text/javascript'); //js file header('Content-type: application/json'); //json header('Content-type: application/pdf'); //pdf header('Content-type: text/xml'); //xml header('Content-Type: application/x-shockw**e-flash'); //Flash animation ###### ###Declare a downloaded file### header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename="ITblog.zip"'); header('Content-Transfer-Encoding: binary'); readfile('test.zip'); ###### ###Disable caching for current document### header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); ###### ###Display a login dialog box that requires verification### header('HTTP/1.1 401 Unauthorized'); header('WWW-Authenticate: Basic realm="Top Secret"'); ###### ###Declare an xls file that needs to be downloaded### header('Content-Disposition: attachment; filename=ithhc.xlsx'); header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'); header('Content-Length: '.filesize('./test.xls')); header('Content-Transfer-Encoding: binary'); header('Cache-Control: must-revalidate'); header('Pragma: public'); readfile('./test.xls'); ###### ?>

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