常用header 头信息

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.web3.xin/'); //跳转到一个新的地址 header('Refresh: 10; url=http://www.web3.xin/'); //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'); ### 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');