gethostbyaddr
(PHP 3, PHP 4, PHP 5)
gethostbyaddr --
Get the Internet host name corresponding to a given IP address
说明
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.
例 1. A simple gethostbyaddr() example
<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
echo $hostname;
?>
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