Event from another site?

[zavin]

Is it possible that if someone enters my site from another site that an event can occur? For example can I have any entry entered into my database if a user come to my site from a specific site?

 

[dezkit]

$_SERVER["HTTP_REFERER"]

[minidak03]

$_SERVER["HTTP_REFERER"]

 

Yes this will work but only if the other site sends the correct headers you can do something like

 

if($_SERVER["HTTP_REFERER"] == 'www.specificsite.com'){// do code here}

 

This will work about 99% of the time but again if the site is a bit messed up you may not get the information, its header specific.

[zavin]

From what I have researched this method is not very secure. The refer is sent by the browser to the server which mean the it can be easily be change. I want user to be rewarded if they come to my site by a referred site. By using $_SERVER["HTTP_REFERER"] it looks like some users would not be rewarded because of browser error and some will be able to manipulate it and get rewarded over and over.

[.josh]

If you have no control over the refering site, then I'm afraid you're out of luck; that's the only thing offered.  Your only consolation is that even though it's fairly easy to spoof (all you really have to do is edit a file on your computer), most people barely know how to turn on their computer.

 

Now, if you DO have control over the refering sites (as in, you can insist certain pieces of code be transmitted from them, look into token passing.

[zavin]

I do have control of the link the user clicks on to come to my site. Does that help or am I still out of lick?

[.josh]

You're still out of luck, unless you are able to dynamically change that link.  As in, the refering site has to request a dynamic link from your site, and you have script to generate it, which you'd include the token in it.