PHP uses REFERER root access to address for page jump_PHP tutorial

For example, I developed a Yellow Pages source code and transferred it to Script Home. I previously set a demo program address: http://www.jb51.net. But now this domain name needs to be used for other sites, and what should I do if the original demo address becomes invalid? Then I can use PHP REFERER to determine the source. If it comes from the address of the webmaster's download station, I will transfer it to the site domain name.

I placed the following code in index.php on the site http://www.jb51.net to allow access from files.jb51.net to locate my server’s commonly used software download http:/ /s.jb51.net

You can go to the demo address on this page

Copy code The code is as follows:

$referHost = parse_url($_SERVER['HTTP_REFERER' ], PHP_URL_HOST);
$validDomain = 'files.jb51.net';
$valid = strstr($referHost, $validDomain) == $validDomain;
if(!empty($valid)) {
echo '<script>location.href="http://s.jb51.net";</script>';
exit;
}

http://www.bkjia.com/PHPjc/313559.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/313559.htmlTechArticleFor example, I developed a Yellow Pages source code and transferred it to Script Home. I have set a demo program address before: http://www.jb51.net But now this domain name needs to be used for other sites...