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(PHP 4, PHP 5, PHP 7, PHP 8)
gethostbyname — 返回主机名对应的 IPv4地址。
hostname
主机名
成功时返回 IPv4 地址,失败时原封不动返回 hostname
字符串。
示例 #1 简单的 gethostbyname() 例子
<?php
$ip = gethostbyname('www.example.com');
echo $ip;
?>