php header函数的常用http头设置

//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';