header的常用方法

<?php
    header('HTTP/1.1 200 OK'); // ok 正常访问
    header('HTTP/1.1 404 Not Found'); //通知浏览器 页面不存在
    header('HTTP/1.1 301 Moved Permanently'); //设置地址被永久的重定向 301
    header('Location: http://www.ithhc.cn/'); //跳转到一个新的地址
    header('Refresh: 10; url=http://www.ithhc.cn/'); //延迟转向 也就是隔几秒跳转
    header('X-Powered-By: PHP/6.0.0'); //修改 X-Powered-By信息
    header('Content-language: en'); //文档语言
    header('Content-Length: 1234'); //设置内容长度
    header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT'); //告诉浏览器最后一次修改时间
    header('HTTP/1.1 304 Not Modified'); //告诉浏览器文档内容没有发生改变
    ###内容类型###
    header('Content-Type: text/html; charset=utf-8'); //网页编码
    header('Content-Type: text/plain'); //纯文本格式
    header('Content-Type: image/jpeg'); //JPG、JPEG 
    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: text/css'); //css文件
    header('Content-type: text/javascript'); //js文件
    header('Content-type: application/json'); //json
    header('Content-type: application/pdf'); //pdf
    header('Content-type: text/xml'); //xml
    header('Content-Type: application/x-shockw**e-flash'); //Flash动画
    ######
    ###声明一个下载的文件###
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename="ITblog.zip"');
    header('Content-Transfer-Encoding: binary');
    readfile('test.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');
    ######
    ###显示一个需要验证的登陆对话框### 
    header('HTTP/1.1 401 Unauthorized'); 
    header('WWW-Authenticate: Basic realm="Top Secret"'); 
    ######
    ###声明一个需要下载的xls文件###
    header('Content-Disposition: attachment; filename=ithhc.xlsx');
    header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
    header('Content-Length: '.filesize('./test.xls')); 
    header('Content-Transfer-Encoding: binary'); 
    header('Cache-Control: must-revalidate'); 
    header('Pragma: public'); 
    readfile('./test.xls'); 
?>

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