http://php.net/manual/en/ini.core.php#ini.register-globals

register_globals is a deprecated feature in the version of PHP you are reported 
to be using. It is removed in the final release after it.

Therefore there is no need to include any more information than is included in 
the manual page I have linked to.

It is a pity that, even when serious deficiencies are drawn to your attention, you arrogantly refuse to correct them. The fact that register_globals is a deprecated feature is not relevant. The fact is there is absolutely no mention of register_globals, or its appalling side-effects, in the SESSION documentation. So it is possible for someone, like myself, to read the whole of the SESSION documentation, and use it, whilst remaining completely ignorant of this underlying disaster.

I simply askled you to warn people. You refuse. That is a very bad decision. I won't bother to try to help you improve in future. Goodbye.

I thought we already mentioned this, or do somewhere else. Does someone else 
remember? There are plenty of PHP 5.3 (and below) users out there. We document PHP 
5.1 and above.

Actually it doesn't mention the linkage between $_SESSION keys and global variables anywhere in the SESSION documentation (although I think I did find a posting by someone somewhere in there that obliquely alerted me to the issue, but I don't think one should have to read all the postings which are often long or old). Yesterday I hadn't even heard of register_globals (why read about deprecated features?). Now I know what it is, having spent the whole of yesterday afternoon investigating why my session vars were changing under my feet. I wouldn't have made this mistake if there had been a mention of this issue in the SESSION documentation.

Please accept my apologies, I am new to the doc team and did not realize we 
documented versions of PHP that are so old

This bug has been fixed in the documentation's XML sources. Since the
online and downloadable versions of the documentation need some time
to get updated, we would like to ask you to be a bit patient.

Thank you for the report, and for helping us make our documentation better.

Please accept my apologies; I am new to the documentation team and simply did not 
realize that it would be acceptable to do as you asked ( to document what I saw 
as a deprecated feature ). I have since been corrected and I have updated the 
documentation with an appropriate warning.

I hope you can find your way to reporting more bugs should you find them, I 
assure you they are never met with arrogance, only a willingness to help out in 
our spare time.

Jolly good. Thanks a lot.