常见Header详解

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<?php  
//200 正常状态  
header('HTTP/1.1 200 OK');  
  
// 301 永久重定向，记得在后面要加重定向地址 Location:$url  
header('HTTP/1.1 301 Moved Permanently');  
  
// 重定向，其实就是302 暂时重定向  
header('Location: https://friday-go.icu/');  
  
// 设置页面304 没有修改  
header('HTTP/1.1 304 Not Modified');  
  
// 显示登录框，  
header('HTTP/1.1 401 Unauthorized');  
header('WWW-Authenticate: Basic realm="登录信息"');  
echo '显示的信息！';  
  
// 403 禁止访问  
header('HTTP/1.1 403 Forbidden');  
   
// 404 错误  
header('HTTP/1.1 404 Not Found');  
  
// 500 服务器错误  
header('HTTP/1.1 500 Internal Server Error');  
   
// 3秒后重定向指定地址(也就是刷新到新页面与 <meta http-equiv="refresh" content="10;hhttps://friday-go.icu/ /> 相同)  
header('Refresh: 3; url=https://friday-go.icu/');  
echo '10后跳转到https://friday-go.icu/';  
   
// 重写 X-Powered-By 值  
header('X-Powered-By: PHP/5.3.0');  
header('X-Powered-By: Brain/0.6b');  
   
//设置上下文语言  
header('Content-language: en');  
   
// 设置页面最后修改时间（多用于防缓存）  
$time = time() - 60; //建议使用filetime函数来设置页面缓存时间  
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT');  
  
// 设置内容长度  
header('Content-Length: 39344');  
   
// 设置头文件类型，可以用于流文件或者文件下载  
header('Content-Type: application/octet-stream');  
header('Content-Disposition: attachment; filename="example.zip"');   
header('Content-Transfer-Encoding: binary');  
readfile('example.zip');//读取文件到客户端  
   
//禁用页面缓存  
header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate');  
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');   
header('Pragma: no-cache');  
   
//设置页面头信息  
header('Content-Type: text/html; charset=iso-8859-1');  
header('Content-Type: text/html; charset=utf-8');  
header('Content-Type: text/plain');   
header('Content-Type: image/jpeg');   
header('Content-Type: application/zip');   
header('Content-Type: application/pdf');   
header('Content-Type: audio/mpeg');  
header('Content-Type: application/x-shockwave-flash');   


###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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