note 106749 modified in function.ip2long by danbrown
| From: | danbrown@php.net | Date: | Tue, 06 Dec 2011 18:42:20 +0000 |
| Subject: | note 106749 modified in function.ip2long by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-184951@lists.php.net to get a copy of this message | ||
Universal ip4/ip6
<?php
// encoded --
function encode_ip ($ip)
{
$d = explode('.', $ip);
if (count($d) == 4) return sprintf('%02x%02x%02x%02x', $d[0], $d[1], $d[2], $d[3]);
$d = explode(':', preg_replace('/(^:)|(:$)/', '', $ip));
$res = '';
foreach ($d as $x)
$res .= sprintf('%0'. ($x == '' ? (9 - count($d)) * 4 : 4) .'s',
$x);
return $res;
}
// decoded
function decode_ip($int_ip)
{
function hexhex($value) { return dechex(hexdec($value)); };
if (strlen($int_ip) == 32) {
$int_ip = substr(chunk_split($int_ip, 4, ':'), 0, 39);
$int_ip = ':'. implode(':', array_map("hexhex",
explode(':',$int_ip))) .':';
preg_match_all("/(:0)+/", $int_ip, $zeros);
if (count($zeros[0]) > 0) {
$match = '';
foreach($zeros[0] as $zero)
if (strlen($zero) > strlen($match))
$match = $zero;
$int_ip = preg_replace('/'. $match .'/', ':', $int_ip, 1);
}
return preg_replace('/(^:([^:]))|(([^:]):$)/', '$2$4', $int_ip);
}
$hexipbang = explode('.', chunk_split($int_ip, 2, '.'));
return hexdec($hexipbang[0]). '.' . hexdec($hexipbang[1]) . '.' .
hexdec($hexipbang[2]) . '.' . hexdec($hexipbang[3]);
}
?>
DB:
user_ip varchar(32) DEFAULT NULL
--was--
Universal ip4/ip6
// encoded --
function encode_ip ($ip)
{
$d = explode('.', $ip);
if (count($d) == 4) return sprintf('%02x%02x%02x%02x', $d[0], $d[1], $d[2], $d[3]);
$d = explode(':', preg_replace('/(^:)|(:$)/', '', $ip));
$res = '';
foreach ($d as $x)
$res .= sprintf('%0'. ($x == '' ? (9 - count($d)) * 4 : 4) .'s',
$x);
return $res;
}
// decoded
function decode_ip($int_ip)
{
function hexhex($value) { return dechex(hexdec($value)); };
if (strlen($int_ip) == 32) {
$int_ip = substr(chunk_split($int_ip, 4, ':'), 0, 39);
$int_ip = ':'. implode(':', array_map("hexhex",
explode(':',$int_ip))) .':';
preg_match_all("/(:0)+/", $int_ip, $zeros);
if (count($zeros[0]) > 0) {
$match = '';
foreach($zeros[0] as $zero)
if (strlen($zero) > strlen($match))
$match = $zero;
$int_ip = preg_replace('/'. $match .'/', ':', $int_ip, 1);
}
return preg_replace('/(^:([^:]))|(([^:]):$)/', '$2$4', $int_ip);
}
$hexipbang = explode('.', chunk_split($int_ip, 2, '.'));
return hexdec($hexipbang[0]). '.' . hexdec($hexipbang[1]) . '.' .
hexdec($hexipbang[2]) . '.' . hexdec($hexipbang[3]);
}
DB:
user_ip varchar(32) DEFAULT NULL
http://php.net/manual/en/function.ip2long.php