使用PHP检查IPv4/IPv6地址是否已启动 [英] Check If IPv4/IPv6 Address is up using PHP

问题描述

我有一个IPv4地址.前任. 172.19.20.21

I have an IPv4 address. Ex. 172.19.20.21

我曾经这样做

$fs = @fsockopen($ip,$port,$errno,$errstr,3);
if( !$fs ){
  $error = 'SSC is down';
  return Redirect::to('/')->with('error', $error )
  ->withInput(Request::except('password'));
}

它工作得很好.

现在，我有一个IPv6地址. 3000::1

Now, I have an IPv6 Address Ex. 3000::1

if ((strpos($ip, ":") > -1)){

     // Code for IPv6 check
    $fs = @fsockopen($ip,$port,$errno,$errstr,3);
    if( !$fs ){
      $error = 'SSC is down';
      return Redirect::to('/')->with('error', $error )
      ->withInput(Request::except('password'));
    }

}else{

    // Code for IPv4 check
    $fs = @fsockopen($ip,$port,$errno,$errstr,3);
    if( !$fs ){
      $error = 'SSC is down';
      return Redirect::to('/')->with('error', $error )
      ->withInput(Request::except('password'));
    }
}

我可以在上面使用此代码吗?还是我需要寻找其他IPv6解决方案?

Can I use this code above ? Or I need to look for other solution for IPv6 ?

推荐答案

解析IP地址的内置方法是 inet_pton( ):

The builtin way to parse an IP address is inet_pton():

此函数转换人类可读的IPv4或IPv6地址(如果是PHP) 是在启用IPv6支持的情况下构建的)集成到地址族中 适当的32位或128位二进制结构.

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.

例如，要确定格式，可以计算结果字节数:

To determine the format you can, for instance, count the resulting bytes:

strlen(inet_pton($ip))

4 bytes = 32 bits = IPv4
16 bytes = 128 bits = IPv6

(不过，在您的确切用例中，目前尚不清楚为什么首先需要使用它.)

(In your precise use case, though, it's kind of unclear why you need this in the first place.)

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