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Title : Sample usage of IPv6 and IPv4 with PHP
Categories : PHP, PHP Classes, Network Click here to Update Your Picture
Ben Yacoub Hatem
Date : Jun 19th 2004
Grade : 3 of 5 (graded 5 times)
Viewed : 33143
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IPv6 Detection class

@copyright 2002-2003 by Dynamix SARL
@author Ben Yacoub Hatem <[email protected]>

detect if an IP is IPv6

@param ip adresse ip א tester
@return true / false


<?php

class ipv6
{

function
is_ipv6($ip = "")
{
  if (
$ip == "")
  {
     
$ip = ipv6::get_ip();
  }
  if (
substr_count($ip,":") > 0 && substr_count($ip,".") == 0){
   return
true;
  } else {
   return
false;
  }
}

/*
* Detect if an IP is IPv4
*
* @param ip adresse ip א tester
* @return true / false
*/
function is_ipv4($ip = "")
{
  return !
ipv6::is_ipv6($ip);
}

/*
* return user IP
*
* @return IP
*/
function get_ip()
{
  return 
getenv ("REMOTE_ADDR");
}

/*
* Uncompress an IPv6 address
*
* @param ip adresse IP IPv6 א dיcompresser
* @return ip adresse IP IPv6 dיcompressי
*/
function uncompress_ipv6($ip ="")
{
  if (
$ip == "")
  {
   
$ip = ipv6::get_ip();
  }
  if(
strstr($ip,"::" ))
  {
   
$e = explode(":", $ip);
   
$s = 8-sizeof($e)+1;
   foreach(
$e as $key=>$val)
   {
    if (
$val == "")
    {
     for(
$i==0;$i<=$s;$i++)
     
$newip[] = 0;
    } else {
     
$newip[] = $val;
    }
   }
   
$ip = implode(":", $newip);
  }
  return
$ip;
}

/*
* Compress an IPv6 address
*
* @param ip adresse IP IPv6 א compresser
* @return ip adresse IP IPv6 compressי
*/
function compress_ipv6($ip ="")
{
  if (
$ip == "")
  {
   
$ip = ipv6::get_ip();
  }
  if(!
strstr($ip,"::" ))
  {
   
$e = explode(":", $ip);
   
$zeros = array(0);
   
$result = array_intersect ($e, $zeros );
   if (
sizeof($result) >= 6)
   {
    if (
$e[0]==0) {$newip[] = "";}
    foreach(
$e as $key=>$val)
    {
     if (
$val !=="0")
     {
     
$newip[] = $val;
     }
    }
   
$ip = implode("::", $newip);
   }
  }
  return
$ip;
}
}

/*
*  IPv6 Compression
*/
echo " IPv6 compression : ".ipv6::compress_ipv6("0:0:0:0:0:0:0:1")."
n"
;

/*
* IPv6 Uncompression
*/
echo "IPv6 Uncompression : ".ipv6::uncompress_ipv6("::1")."
n"
;

/*
* Tester IPv6
*/
echo "Your IP is ".ipv6::get_ip()." et You're using : ";
echo (
ipv6::is_ipv6())? "IPv6":"IPv4";
?>



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