IP and gethostbyaddr() --- difference?
| From: | Martin Zvarík | Date: | Sat, 13 Dec 2008 23:28:57 +0000 |
| Subject: | IP and gethostbyaddr() --- difference? | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-284592@lists.php.net to get a copy of this message | ||
Hello,
I am doing a view stats for my website.
I've seen that many of such statistic scripts store two values to identify the visitor: IP and getHostByAddr(IP)
I've been searching..., but I don't get why the IP address isn't enough by itself?! What is the getHostByAddr() = Internet host name for?
When IP changes the hostname does too and vice-versa?
What's the difference between these two values?
And why do I need both of them?
Martin