Http_referer

[chinmay.sahoo]

This variable contains the URL of the page the user viewed prior to the one he or she is currently viewing. Keep in mind when using HTTP_REFERER that not every page request has a referer. If someone types the URL into a browser, or gets to your page via bookmarks, no referer will be sent. This variable can be used to present customized information. If you had a relationship with another site and wished to
serve up a special, customized header for only those referred from that domain you might use a script like this.

//check if my user was referred from my_partners_domain.com
if(ereg (“http.*my_partners_domain.com.*” , $HTTP_REFERER))
{
include’fancy_header.php’;
}else{
include’normal_header.php’;
}

Keep in mind that HTTP_REFERER is notoriously unreliable. Different browsers serve up different
HTTP_REFERER s in certain situations. It is also easily spoofed. So you wouldn ’t want to use a script like the preceding one to serve any secure infor-mation. I worked on a site where HTTP_REFERER
was used to determine if a special GIF should be included in the header

 

[mohammad farhan]

In a PHP script on a website, it will get you the value of the "HTTP_REFERER" value passed to the server from the user's browser.

 

[serman46]

I agree with you.

 

[jacks009]

Great information thanks for sharing.