Commonly used header definitions in PHP

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 means jumping 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 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 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');
######

###Display a login dialog box that requires authentication###
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');
######


?>

PHP, header