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Bug #13423 gethostbyname() returns hostname when ip address is part of hostname
Submitted: 2001-09-24 18:12 UTC Modified: 2002-06-15 09:24 UTC
From: gardner at armory dot com Assigned:
Status: Closed Package: Unknown/Other Function
PHP Version: 4.0.4pl1 OS:
Private report: No CVE-ID: None
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From: gardner at armory dot com
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 [2001-09-24 18:12 UTC] gardner at armory dot com
When you pass a host name such as ip-255-255-255-255.reverse.mobilenetics.com to gethostbyname() it returns the hostname, not the ip address.

Regular hostnames like google.com work.

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 [2001-09-24 18:34 UTC] jimw@php.net
actually, what is going on is that php's gethostbyname() simply returns the name when it can't be resolved. (that seems like rather silly behavior to me, and is probably worth changing.)
 [2002-06-15 09:24 UTC] derick@php.net
It might be silly behavior... but we can not change this now due to BC issues.

Derick
 
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