PHP header函数一此常用的用法详解

// 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.111cn.net/');

// redrict with delay:
header('Refresh: 10; url=http://www.111cn.net/');
//print You will be redirected in 10 seconds;

// you could also use the HTML syntax:// <meta http-equiv="refresh" content="10;http://www.111cn.net/ />

// 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');

// 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;

// 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');

php页面为utf编码
header("Content-type: text/html; charset=utf-8");

php页面为gbk编码
header("Content-type: text/html; charset=gb2312");

php页面为big5编码
header("Content-type: text/html; charset=big5");

Header( "HTTP/1.1 301 Moved Permanently" ) ;
Header( "Location: www.111cn.net" );