PHP - How to determine if request is coming from a specific file.

Posted by John on Stack Overflow See other posts from Stack Overflow or by John
Published on 2010-02-21T05:14:53Z Indexed on 2010/04/15 3:03 UTC
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php

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security

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server-variables

I have fileA.php on SERVER_A and fileB.php on SERVER_B

fileB.php makes a curl request to fileA.php for it's contents

How can fileA.php determine that the request is coming specifically from fileB.php?

--

I was thinking about sending the $_SERVER['SCRIPT_NAME'] in fileB.php to fileA.php but since someone can go into fileB.php or any file in general and just do $_SERVER['SCRIPT_NAME'] = 'fileB.php'; it's not really that secure.

So how can I determine, for security reasons, that the request is coming from a specific file on a different server?

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