<?phpheader('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 301header('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、JPEGheader('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');//jsonheader('Content-type: application/pdf');//pdfheader('Content-type: text/xml');//xmlheader('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');######?>