Converts a human readable IP address to its packed in_addr representation

# inet_pton

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

inet_pton — Converts a human readable IP address to its packed in_addr representation

### 说明

function inet_pton(string `$ip`): string|false

This function converts a human readable IPv4 or IPv6 address (if PHP was built with IPv6 support enabled) into an address family appropriate 32bit or 128bit binary structure.

### 参数

`ip`

  A human readable IPv4 or IPv6 address.

### 返回值

Returns the `in_addr` representation of the given `ip`, or `false` if a syntactically invalid `ip` is given (for example, an IPv4 address without dots or an IPv6 address without colons).

### 示例

示例 #1 inet_pton() Example

    <?php
    $in_addr = inet_pton('127.0.0.1');

    $in6_addr = inet_pton('::1');
    ?>

### 参见

- ip2long() - 将 IPV4 的字符串互联网协议转换成长整型数字
- long2ip() - 将长整型转化为字符串形式带点的互联网标准格式地址（IPV4）
- inet_ntop() - Converts a packed internet address to a human readable representation

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