php header

// ok   
header('HTTP/1.1 200 OK');   
  
//设置一个404头:   
header('HTTP/1.1 404 Not Found');   
  
//设置地址被永久的重定向   
header('HTTP/1.1 301 Moved Permanently');   
  
//转到一个新地址   
header('Location: http://www.example.org/');   
  
//文件延迟转向:   
header('Refresh: 10; url=http://www.example.org/');   
print 'You will be redirected in 10 seconds';   
  
//当然，也可以使用html语法实现   
// <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');   
  
//文档语言   
header('Content-language: en');   
  
//告诉浏览器最后一次修改时间   
$time = time() - 60; // or filemtime($fn), etc   
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT');   
  
//告诉浏览器文档内容没有发生改变   
header('HTTP/1.1 304 Not Modified');   
  
//设置内容长度   
header('Content-Length: 1234');   
  
//设置为一个下载类型   
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');   
  
// 对当前文档禁用缓存   
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 past   
header('Pragma: no-cache');   
  
//设置内容类型:   
header('Content-Type: text/html; charset=iso-8859-1');   
header('Content-Type: text/html; charset=utf-8');   
header('Content-Type: text/plain'); //纯文本格式   
header('Content-Type: image/jpeg'); //JPG***   
header('Content-Type: application/zip'); // ZIP文件   
header('Content-Type: application/pdf'); // PDF文件   
header('Content-Type: audio/mpeg'); // 音频文件   
header('Content-Type: application/x-shockw**e-flash'); //Flash动画   
  
//显示登陆对话框   
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';