(PHP 4, PHP 5, PHP 7)
gethostbyaddr — 锟斤拷取指锟斤拷锟斤拷IP锟斤拷址锟斤拷应锟斤拷锟斤拷锟斤拷锟斤拷
$ip_address
) : string
锟斤拷锟斤拷指锟斤拷锟斤拷IP锟斤拷址锟斤拷ip_address锟斤拷锟斤拷应锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
ip_address锟斤拷锟斤拷锟斤拷IP锟斤拷址锟斤拷
锟缴癸拷锟津返伙拷锟斤拷锟斤拷锟斤拷锟斤拷失锟斤拷锟斤拷原锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷IP锟斤拷址锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥革拷式锟斤拷锟斤拷锟斤拷锟斤拷锟津返伙拷FALSE锟斤拷
Example #1 一锟斤拷使锟斤拷 gethostbyaddr() 锟侥硷拷锟斤拷锟斤拷
<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
echo $hostname;
?>