What security problems could come from exposing phpinfo() to end users?

Question

If a phpinfo() dump is shown to an end user, what is the worst that a malicious user could do with that information? What fields are most unsecure? That is, if

Answer 1

The biggest problem is that many versions make XSS attacks simple by printing the contents of the URL and other data used to access it.

http://www.php-security.org/MOPB/MOPB-08-2007.html