Requests_IPv6::uncompress()
Uncompresses an IPv6 address
RFC 4291 allows you to compress consecutive 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
{} It's a method of the class: Requests_IPv6{}
No Hooks.
Return
String
. The uncompressed IPv6 address
Usage
$result = Requests_IPv6::uncompress( $ip );
- $ip(string) (required)
- An IPv6 address
Code of Requests_IPv6::uncompress() Requests IPv6::uncompress WP 6.0
public static function uncompress($ip) { if (substr_count($ip, '::') !== 1) { return $ip; } list($ip1, $ip2) = explode('::', $ip); $c1 = ($ip1 === '') ? -1 : substr_count($ip1, ':'); $c2 = ($ip2 === '') ? -1 : substr_count($ip2, ':'); if (strpos($ip2, '.') !== false) { $c2++; } // :: if ($c1 === -1 && $c2 === -1) { $ip = '0:0:0:0:0:0:0:0'; } // ::xxx elseif ($c1 === -1) { $fill = str_repeat('0:', 7 - $c2); $ip = str_replace('::', $fill, $ip); } // xxx:: elseif ($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; }