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I'm a newbie so excuse me if question could be stupid
I have a webpage where i have placed a form html with recaptcha validation
I have grabbed on the net following code :


<script...

not only for ad site but i want a minimal protection...
i have tried also the define method: Suppose that i want protect page index.php containing a form
i have inserted function define in...

ok working it was a my mistake...
ok but it can be easily spoofed
A best alternative to $_SERVER['HTTP_REFERER'] what is ?

<?php
if($_SERVER['HTTP_REFERER'] == NULL) {
echo "access denied";
exit();
} else {
// Insert your page contents here.

header("Location: http://site.com");...

correct but i'm new in php can you help me with code ?

ok.. but this work if the banner is located in my page that i specify in script but i want the system working for banner located in any webpage on internet

ok thank you can you post some example of code how to make ?
thanks

An user clicks on my banner that open my php page
I want this page is loaded only clicking on the banner and not putting the 'web address directly in the browser
It's possible?