ipv4 地址转换，为何不使用inet_ntop() 函数

Socks5 源码：
` for ($i = 0; $i < 4; $i++) {
// var_dump(ord($tmp[$i]));
$ip += ord($tmp[$i]) * pow(256, 3 - $i);
}
$request['dest_addr'] = long2ip($ip);
`

使用内置函数也可以解析：
inet_ntop()

Start with the shown SOCKS5 IPv4 conversion loop and compare its output with PHP's inet_ntop() behavior for the same four-byte address. Confirm the expected address format and any compatibility concerns, then determine whether the conversion should be changed or the rationale documented; the issue is complete when that question has a clear, verified answer.

Written by the indexing model from the issue text.