Detailed explanation of 301 redirect jump examples based on PHP

This article mainly introduces how to implement 301 redirection in php. Through the example code, everyone can better understand the redirection method. Friends in need can refer to the following

How to implement 301 redirection in php It's very simple. We just need to use the header to send the 301 status code, and then use the header to jump. The effect is the same as apache, iis, and nginx.

1: This method is more recommended because it can transfer all the original URLs of http://www.jb51.net to the new address of http://jb51.net

The code is as follows

<?php
$the_host = $_SERVER[&#39;HTTP_HOST&#39;];
$request_uri = isset($_SERVER[&#39;REQUEST_URI&#39;]) ? $_SERVER[&#39;REQUEST_URI&#39;] : &#39;&#39;;
if($the_host == &#39;www.jb51.net&#39;)
{
header(&#39;HTTP/1.1 301 Moved Permanently&#39;);
header(&#39;Location: http://jb51.net&#39;.$request_uri);//
}
?>

2: Php301 redirection code for single page and multiple sites,www.jb51.net and jb51.net means 301 goes to index.php, jbzj.com means 301 goes to www.jbzj.com, otherwise it goes to the error page

The code is as follows

if(($HTTP_HOST=="www.jb51.net")or($HTTP_HOST=="jb51.net"))
{
header("HTTP/1.1 301 Moved Permanently");
Header("Location: /index.php");
}
elseif($HTTP_HOST=="jbzj.com")
{
header("HTTP/1.1 301 Moved Permanently");
Header("Location: www.jbzj.com");
}
else
{
Header("Location: /404.htm");
}
?>

## Attached are other jump methods

The code is as follows

//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(&#39;X-Powered-By: PHP/4.4.0&#39;);
header(&#39;X-Powered-By: Brain/0.6b&#39;);
//文档语言
header(&#39;Content-language: en&#39;);
//告诉浏览器最后一次修改时间
$time = time() - 60; // or filemtime($fn), etc
header(&#39;Last-Modified: &#39;.gmdate(&#39;D, d M Y H:i:s&#39;, $time).&#39; GMT&#39;);
//告诉浏览器文档内容没有发生改变
header(&#39;HTTP/1.1 304 Not Modified&#39;);
//设置内容长度
header(&#39;Content-Length: 1234&#39;);
//设置为一个下载类型
header(&#39;Content-Type: application/octet-stream&#39;);
header(&#39;Content-Disposition: attachment; filename="example.zip"&#39;);
header(&#39;Content-Transfer-Encoding: binary&#39;);
// load the file to send:
readfile(&#39;example.zip&#39;);
// 对当前文档禁用缓存
header(&#39;Cache-Control: no-cache, no-store, max-age=0, must-revalidate&#39;);
header(&#39;Expires: Mon, 26 Jul 1997 05:00:00 GMT&#39;); // Date in the past
header(&#39;Pragma: no-cache&#39;);
//设置内容类型:
header(&#39;Content-Type: text/html; charset=iso-8859-1&#39;);
header(&#39;Content-Type: text/html; charset=utf-8&#39;);
header(&#39;Content-Type: text/plain&#39;); //纯文本格式
header(&#39;Content-Type: image/jpeg&#39;); //JPG***
header(&#39;Content-Type: application/zip&#39;); // ZIP文件
header(&#39;Content-Type: application/pdf&#39;); // PDF文件
header(&#39;Content-Type: audio/mpeg&#39;); // 音频文件
header(&#39;Content-Type: application/x-shockw**e-flash&#39;); //Flash动画
//显示登陆对话框
header(&#39;HTTP/1.1 401 Unauthorized&#39;);
header(&#39;WWW-Authenticate: Basic realm="Top Secret"&#39;);
print &#39;Text that will be displayed if the user hits cancel or &#39;;
print &#39;enters wrong login data&#39;;

Please pay attention to the following points when jumping, which will help solve some problems that novices often encounter

1. There cannot be a space between location and ":", otherwise an error will occur.

#2. There cannot be any output before using the header.

#3. The PHP code after the header will also be executed.

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

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