php的header函数之设置content-type

http://blog.csdn.net/kankan231/article/details/37929409

设置常用的content-type：

 //定义编码
 header( 'Content-Type:text/html;charset=utf-8 ');

 //Atom
 header('Content-type: application/atom+xml');

 //CSS
 header('Content-type: text/css');

 //Javascript
 header('Content-type: text/javascript');

 //JPEG Image
 header('Content-type: image/jpeg');

 //JSON
 header('Content-type: application/json');

 //PDF
 header('Content-type: application/pdf');

 //RSS
 header('Content-Type: application/rss+xml; charset=ISO-8859-1');

 //Text (Plain)
 header('Content-type: text/plain');

 //XML
 header('Content-type: text/xml');

 // 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';

下载xlsx文件

 $filename = rtrim($_SERVER['DOCUMENT_ROOT'],'/').'/app/files/payment_status.csv';
 header('Content-Disposition: attachment; filename=payment_status.xlsx');
 header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
 header('Content-Length: ' . filesize($filename));
 header('Content-Transfer-Encoding: binary');
 header('Cache-Control: must-revalidate');
 header('Pragma: public');
 readfile($filename);