【转】http header头可以设立的参数
// ok //设置一个404头: //设置地址被永久的重定向 //转到一个新地址 //文件延迟转向: //当然,也可以使用html语法实现 // override X-Powered-By: PHP: //文档语言 //告诉浏览器最后一次修改时间 //告诉浏览器文档内容没有发生改变 //设置内容长度 //设置为一个下载类型 // 对当前文档禁用缓存 //设置内容类型: //显示登陆对话框
header('HTTP/1.1 200 OK');
header('HTTP/1.1 404 Not Found');
header('HTTP/1.1 301 Moved Permanently');
header('Location: http://www.example.org/');
header('Refresh: 10; url=http://www.example.org/');
print 'You will be redirected in 10 seconds';
// <meta http-equiv="refresh" content="10;http://www.example.org/ />
header('X-Powered-By: PHP/4.4.0');
header('X-Powered-By: Brain/0.6b');
header('Content-language: en');
$time = time() - 60; // or filemtime($fn), etc
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT');
header('HTTP/1.1 304 Not Modified');
header('Content-Length: 1234');
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');
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');
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
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';