PHP gethostbynamel() 函数 - PHP教程

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gethostbynamel()

1. 定义

该函数通过指定的主机名，获取其对应的IPv4地址列表。成功时返回IPv4地址数组，解析失败则返回FALSE。

2. 语法

gethostbynamel ( string $hostname ) : array

3. 参数说明

参数	可选性	数据类型	描述
$hostname	必需	字符串	主机名，例如`www.jisuapi.com`

4. 示例

<?php

// gethostbynamel()
// 通过指定的主机名，获取其对应的`IPv4`地址列表

$hostname = 'www.jisuapi.com';
$hostlist = gethostbynamel($hostname);
print_r($hostlist);
/* 输出
Array
(
    [0] => 122.224.186.156
)
 */

$hostname = 'www.baidu.com';
$hostlist = gethostbynamel($hostname);
print_r($hostlist);
/* 输出
Array
(
    [0] => 183.232.231.174
    [1] => 183.232.231.172
)
 */

5. 延展阅读

gethostbyname()：通过指定的主机名，返回其对应的IPv4地址
gethostbyaddr()：通过指定 IP 地址返回其对应的主机名

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