Solution to the problem of IPV6 ip2long in php_PHP tutorial

On 32-bit systems, ip2long cannot convert IPv6, but you can convert ip2bin and bin2ip This function converts to IPv4 and IPv6, returning false if it is invalid

Instance program

The code is as follows

代码如下

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function ip2bin($ip) { if(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false) return base_convert(ip2long($ip),10,2); if(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false) return false; if(($ip_n = inet_pton($ip)) === false) return false; $bits = 15; // 16 x 8 bit = 128bit (ipv6) while ($bits >= 0)     {         $bin = sprintf("%08b",(ord($ip_n[$bits])));         $ipbin = $bin.$ipbin;         $bits--;     }     return $ipbin; } function bin2ip($bin) {    if(strlen($bin) <= 32) // 32bits (ipv4) return long2ip(base_convert($bin,2,10)); if(strlen($bin) != 128) return false; $pad = 128 - strlen($bin); for ($i = 1; $i <= $pad; $i++) { $bin = "0".$bin; } $bits = 0; while ($bits <= 7) { $bin_part = substr($bin,($bits*16),16); $ipv6 .= dechex(bindec($bin_part)).":"; $bits++; } return inet_ntop(inet_pton(substr($ipv6,0,-1))); } ?>

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function ip2bin($ip)
{
If(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false)
          return base_convert(ip2long($ip),10,2);
If(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) === false)
         return false;
If(($ip_n = inet_pton($ip)) === false) return false;
$bits = 15; // 16 x 8 bit = 128bit (ipv6)
While ($bits >= 0)
{
         $bin = sprintf("%08b",(ord($ip_n[$bits])));
$ipbin = $bin.$ipbin;
         $bits--;
}  
Return $ipbin;
}

function bin2ip($bin)
{
if(strlen($bin) <= 32) // 32bits (ipv4)
         return long2ip(base_convert($bin,2,10));
if(strlen($bin) != 128)
        return false;
$pad = 128 - strlen($bin);
for ($i = 1; $i <= $pad; $i++)
{
         $bin = "0".$bin;
}
$bits = 0;
while ($bits <= 7)
{
$bin_part = substr($bin,($bits*16),16);
         $ipv6 .= dechex(bindec($bin_part)).":";
$bits++;
}
Return inet_ntop(inet_pton(substr($ipv6,0,-1)));
}
?>

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TechArticleIn 32-bit systems, ip2long cannot convert IPv6, but you can convert ip2bin and bin2ip this function to IPv4 and IPv6 , return false, if it is an invalid instance program code, copy the code as follows...