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f dot wiessner at smart-weblications dot net ¶

15 years ago

Here some working ip2long6 and long2ip6 functions - keep in mind that this needs php gmp-lib:



<?php



$ipv6 = "2001:4860:a005::68";



function ip2long6($ipv6) {

  $ip_n = inet_pton($ipv6);

  $bits = 15; // 16 x 8 bit = 128bit

  while ($bits >= 0) {

    $bin = sprintf("%08b",(ord($ip_n[$bits])));

    $ipv6long = $bin.$ipv6long;

    $bits--;

  }

  return gmp_strval(gmp_init($ipv6long,2),10);

}



function long2ip6($ipv6long) {



  $bin = gmp_strval(gmp_init($ipv6long,10),2);

  if (strlen($bin) < 128) {

    $pad = 128 - strlen($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++;

  }

  // compress



  return inet_ntop(inet_pton(substr($ipv6,0,-1)));

}



print $ipv6long =  ip2long6($ipv6)."\n";

print $ipv6 = long2ip6($ipv6long)."\n";



?>



outputs:



42541956150894553250710573749450571880

2001:4860:a005::68

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