   #PHP Manual Network Functions fsockopen gethostbyname

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                                 gethostbyaddr

   (PHP 3, PHP 4 )
   gethostbyaddr --  Get the Internet host name corresponding to a given
   IP address

Description

   string gethostbyaddr ( string ip_address)

   Returns the host name of the Internet host specified by ip_address or
   a string containing the unmodified ip_address on failure.

   Example 1. A simple gethostbyaddr() example
   <?php
   $hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);

   echo $hostname;
   ?>

   See also gethostbyname().
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