gethostbyaddr
(PHP 4, PHP 5)
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.
Parameters
-
ip_address -
The host IP address.
Return Values
Returns the host name on success, the unmodified ip_address
on failure, or FALSE on malformed input.
Examples
Example #1 A simple gethostbyaddr() example
<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
echo $hostname;
?>
See Also
- gethostbyname() - Get the IPv4 address corresponding to a given Internet host name
- gethostbynamel() - Get a list of IPv4 addresses corresponding to a given Internet host name