php header函数的常用http头设置

//okheader(‘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), etcheader(‘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 pastheader(‘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';