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PHP function ip2long() implements a solution to the problem of negative numbers when converting IP to integer

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Release： 2016-07-25 08:57:40
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  2. $ip = "192.168.1.2";
  3. $ip_n = ip2long($ip);
  4. echo $ip_n; //Get -1062731518
  5. ?>
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Reason: The integer value converted by IP is too large and exceeds the range of the integer, so it becomes a negative number.

You need to make the following modifications, modify it to $ip_n = bindec(decbin(ip2long($ip))) to get the unsigned integer.

For example:

  2. $ip = "192.168.1.2";
  3. $ip_n = bindec(decbin(ip2long($ip)));
  4. //by bbs.it-home.org
  5. echo $ ip_n; //Get 3232235778
  6. ?>
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Related labels：
PHP函数ip2long()实现IP转换成整型时出现负数的解决方法
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