Network
PHP Manual

gethostbyaddr

(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 .

参数

ip_address

The host IP address.

返回值

Returns the host name or the unmodified ip_address on failure.

范例

Example#1 A simple gethostbyaddr() example

<?php
$hostname 
gethostbyaddr($_SERVER['REMOTE_ADDR']);

echo 
$hostname;
?>

参见


Network
PHP Manual