PHP的header函数详解

October 24, 2010

大部分时候我们使用PHP中header函数常用的有
header(‘Location: http://www.example.org/’);
header(‘Content-Type: text/html; charset=utf-8′);
下面列出header函数的大部分使用方式

 

// 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'; 
?>

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