PHP的header函数详解

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

<?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 could 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’; ?>