PHP uses the REFERER root residence to access the address for page Jump

This article mainly judges the source based on the referfer and jumps to the page to avoid page access failure and poor user experience.

This article mainly judges the source based on the referfer and jumps to the page to avoid page access failure and poor user experience.

For example, I developed a yellow page source code and transferred it to my home. I have previously set a demo program address: But now this domain name needs to be used for other sites, and what should I do if the original demo address is invalid. Then I can use php referer to determine the source. If it is from the address of the webmaster download site, I will transfer it to the site domain name.

I put the following code in index. php on this site to allow access from files.jb51.net to find my server's frequently-used software download.

You can go to the demo address on this page.

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;
}