php file accessible only from specific destination

[greekuser]

hello,

 

i have a little problem with one eshop i have made

and credit card payments are send to a bank secure site.

 

everything works ok, but the bank asked me for a validation.php file

to be on the eshop that sends an ok in order to complete the payment.

 

what i want to do is to limit the access to that php file

so that it can be accessed only by direct request and only from the bank site url

 

i dont want to be accessed by anyone else.

 

the reason is that the validation.php makes a query that i dont want the result (even if it is a simple ok) to be known to anyone else but the bank

 

can this be done within php or with a .htaccess modification  ???

 

[revraz]

You can use their IP, their domain or a login type of system.

[greekuser]

and how exactly can i put it in php

 

can you please help me with the writting

 

or if the is there a tutorial i can read

[greekuser]

i could use a litle help with the syntax

 

[adam291086]

you will need something like

 

$hostname = $_SERVER['REMOTE_ADDR'];

echo $hostname

[adam291086]

ok i got bord, try something like this.

 

$hostname = $_SERVER['REMOTE_ADDR'];
if($hostname =="192.168.2.1")
{
//do the validation stuff

}
else
{
echo "You don't have access to this file";
}

[greekuser]

thanks adam291086 

 

but one last thing

 

if i want to use their domain instead

 

i just replace the IP right?

 

 

[adam291086]

if you want domain look at http://uk3.php.net/manual/en/function.gethostbyaddr.php

[revraz]

You would want to use REFERER instead