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(PHP 4, PHP 5, PHP 7, PHP 8)
gethostbyaddr — 获取指定 IP 地址对应的 Internet 主机名
ip
主机 IP 地址。
成功则返回主机名,失败时返回未修改的 ip
,输入错误时返回 false
。
示例 #1 gethostbyaddr() 的简单例子
<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
echo $hostname;
?>