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']);
这样得出ip,然后比对ip
(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']);
print $hostname;
?>
看来PHP的函数真多啊,自己懂得的不过是九牛一毛…