php function:limit websites?

[VBKit]

Hi all, I am a newbie in php, will be appreciated for any possible help.

Is there a function that I could limit the access gained only to a whole set of websites, eg: *.abc.com? A similar function to limit access by looking into the IPs: $ip=$_SERVER['REMOTE_ADDR'];

Thanks again.

[Slyke]

How do you mean? Will people be using your script as sort of like a proxy? Or do you want your script to not be able to have access to these sites?

Could you explain to us what your goal is please?

[dclamp]

How do you mean? Will people be using your script as sort of like a proxy? Or do you want your script to not be able to have access to these sites?

Could you explain to us what your goal is please?

Agreed. I am not sure i understand any part of the question...

[penagate]

You can use the function gethostbyaddr to look up an IP address in DNS.

[VBKit]

Sorry for the uncleared question.

Ok, I have writen a php that return data in an xml form. But I want to restrict it to be availabe to website *.abc.com only, that means if the php is called by other website or someone else, it will not return any date. My client could not provide me any IPs as they could be changed without knowing, their hostname will not change: *abc.com, just wonder if I can get around it...

[VBKit]

Thanks for your reply penagate---will have a look now!

[kows]

sounds like you want to filter referers. they can be spoofed, but there doesn't seem to be much else you could do. you can access the referer using $_SERVER['HTTP_REFERER'], and use parse_url() to look at the host.