php的header函数之设置content-type

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);