Detailed explanation of the example of setting http header using PHP header function, _PHP tutorial

<span class="comment">//定义编码
header( <span class="string">'Content-Type:text/html;charset=utf-8 ');
 
<span class="comment">//Atom
header(<span class="string">'Content-type: application/atom+xml');
 
<span class="comment">//CSS
header(<span class="string">'Content-type: text/css');
 
<span class="comment">//Javascript
header(<span class="string">'Content-type: text/javascript');
 
<span class="comment">//JPEG Image
header(<span class="string">'Content-type: image/jpeg');
 
<span class="comment">//JSON
header(<span class="string">'Content-type: application/json');
 
<span class="comment">//PDF
header(<span class="string">'Content-type: application/pdf');
 
<span class="comment">//RSS
header(<span class="string">'Content-Type: application/rss+xml; charset=ISO-8859-1');
 
<span class="comment">//Text (Plain)
header(<span class="string">'Content-type: text/plain');
 
<span class="comment">//XML
header(<span class="string">'Content-type: text/xml');
 
<span class="comment">//200 OK
header(<span class="string">'HTTP/1.1 200 OK');
 
<span class="comment">//设置一个404头:
header(<span class="string">'HTTP/1.1 404 Not Found');
 
<span class="comment">//设置地址被永久的重定向
header(<span class="string">'HTTP/1.1 301 Moved Permanently');
 
<span class="comment">//转到一个新地址
header(<span class="string">'Location: http://www.example.org/');
 
<span class="comment">//文件延迟转向:
header(<span class="string">'Refresh: 10; url=http://www.example.org/');
<span class="keyword">print <span class="string">'You will be redirected in 10 seconds';
 
<span class="comment">//当然，也可以使用html语法实现
<span class="comment">//<meta http-equiv="refresh" content="10;http://www.example.org/ />
 
<span class="comment">//override X-Powered-By: PHP:
header(<span class="string">'X-Powered-By: PHP/4.4.0');
header(<span class="string">'X-Powered-By: Brain/0.6b');
 
<span class="comment">//文档语言
header(<span class="string">'Content-language: en');
 
<span class="comment">//告诉浏览器最后一次修改时间
<span class="variable">$time = time() - <span class="number">60; <span class="comment">// or filemtime($fn), etc
header(<span class="string">'Last-Modified: '.gmdate(<span class="string">'D, d M Y H:i:s', <span class="variable">$time).<span class="string">' GMT');
 
<span class="comment">//告诉浏览器文档内容没有发生改变
header(<span class="string">'HTTP/1.1 304 Not Modified');
 
<span class="comment">//设置内容长度
header(<span class="string">'Content-Length: 1234');
 
<span class="comment">//设置为一个下载类型
header(<span class="string">'Content-Type: application/octet-stream');
header(<span class="string">'Content-Disposition: attachment; filename="example.zip"');
header(<span class="string">'Content-Transfer-Encoding: binary');
<span class="comment">//load the file to send:
readfile(<span class="string">'example.zip');
 
<span class="comment">//对当前文档禁用缓存
header(<span class="string">'Cache-Control: no-cache, no-store, max-age=0, must-revalidate');
header(<span class="string">'Expires: Mon, 26 Jul 1997 05:00:00 GMT'); <span class="comment">// Date in the past
header(<span class="string">'Pragma: no-cache');
 
<span class="comment">//设置内容类型:
header(<span class="string">'Content-Type: text/html; charset=iso-8859-1');
header(<span class="string">'Content-Type: text/html; charset=utf-8');
header(<span class="string">'Content-Type: text/plain'); <span class="comment">//纯文本格式
header(<span class="string">'Content-Type: image/jpeg'); <span class="comment">//JPG***
header(<span class="string">'Content-Type: application/zip'); <span class="comment">// ZIP文件
header(<span class="string">'Content-Type: application/pdf'); <span class="comment">// PDF文件
header(<span class="string">'Content-Type: audio/mpeg'); <span class="comment">// 音频文件
header(<span class="string">'Content-Type: application/x-shockw**e-flash'); <span class="comment">//Flash动画
 
<span class="comment">//显示登陆对话框
header(<span class="string">'HTTP/1.1 401 Unauthorized');
header(<span class="string">'WWW-Authenticate: Basic realm="Top Secret"');
<span class="keyword">print <span class="string">'Text that will be displayed if the user hits cancel or ';
<span class="keyword">print <span class="string">'enters wrong login data';</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><br /><br /><br />