Summery Summery
Uncompresses an IPv6 address
Syntax Syntax
Description Description
RFC 4291 allows you to compress concecutive zero pieces in an address to ‘::’. This method expects a valid IPv6 address and expands the ‘::’ to the required number of zero pieces.
Example: FF01::101 -> FF01:0:0:0:0:0:0:101 ::1 -> 0:0:0:0:0:0:0:1
Parameters Parameters
- $ip
-
(Required) An IPv6 address
Return Return
(string) The uncompressed IPv6 address
Source Source
File: wp-includes/SimplePie/Net/IPv6.php
{ $c1 = -1; $c2 = -1; if (substr_count($ip, '::') === 1) { list($ip1, $ip2) = explode('::', $ip); if ($ip1 === '') { $c1 = -1; } else { $c1 = substr_count($ip1, ':'); } if ($ip2 === '') { $c2 = -1; } else { $c2 = substr_count($ip2, ':'); } if (strpos($ip2, '.') !== false) { $c2++; } // :: if ($c1 === -1 && $c2 === -1) { $ip = '0:0:0:0:0:0:0:0'; } // ::xxx else if ($c1 === -1) { $fill = str_repeat('0:', 7 - $c2); $ip = str_replace('::', $fill, $ip); } // xxx:: else if ($c2 === -1) { $fill = str_repeat(':0', 7 - $c1); $ip = str_replace('::', $fill, $ip); } // xxx::xxx else { $fill = ':' . str_repeat('0:', 6 - $c2 - $c1); $ip = str_replace('::', $fill, $ip); } } return $ip; }