note 88004 added to function.md5
| From: | jwohlers at waubonsee dot edu | Date: | Mon, 05 Jan 2009 20:18:21 +0000 |
| Subject: | note 88004 added to function.md5 | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-148863@lists.php.net to get a copy of this message | ||
sandaimespaceman, using the IP address of the client is a really bad idea. There are network
configurations where the clients ip address will change countless times throughout the session. In
those cases your users will have to re-authenticate constantly, and get VERY upset with you. I
deal with this issue on a regular basis, please don't do it.
Example:
My college uses a pooled collection of IP addresses when connecting to the outside world. The IP
addresses are set to rotate at a rate of ~30 seconds. This means that to your server I will always
appear to come from a different REMOTE_ADDRESS and break your cookie every time.
Again, and I cannot stress this enough to developers, NEVER rely on the IP address remaining static
in a given session.
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Server IP: 208.69.120.35
Probable Submitter: 192.81.253.250
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Manual Page -- http://www.php.net/manual/en/function.md5.php
Edit -- https://master.php.net/note/edit/88004
Del: integrated -- https://master.php.net/note/delete/88004/integrated
Del: useless -- https://master.php.net/note/delete/88004/useless
Del: bad code -- https://master.php.net/note/delete/88004/bad+code
Del: spam -- https://master.php.net/note/delete/88004/spam
Del: non-english -- https://master.php.net/note/delete/88004/non-english
Del: in docs -- https://master.php.net/note/delete/88004/in+docs
Del: other reasons-- https://master.php.net/note/delete/88004
Reject -- https://master.php.net/note/reject/88004
Search -- https://master.php.net/manage/user-notes.php