PHP 使用header函数设置HTTP头的示例
[*]// 页面正常状态 200 ok
[*]header(‘HTTP/1.1 200 OK’);
[*]
[*]//设置一个404头: 404文件找不到错误
[*]header(‘HTTP/1.1 404 Not Found’);
[*]
[*]//设置地址被永久的重定向301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’;
页:
[1]