$iptype

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Returns "ipv4" or "ipv6" if text is is a valid IP address format.

$iptype(text)

Where text is the address to check its type.

The following properties are available for $iptype:

Property Description
compress compresses the address (IPv6)
expand expands the address (IPv6)

Examples

$iptype(255.255.255.255)

Returns ipv4.

$iptype(FF::FF)

Returns ipv6.

$iptype(FF::FF).expand

Returns FF:0:0:0:0:0:0:FF.

if (!$iptype($ip)) {
  echo -ag $ip is an invalid IP Address!
}
elseif ($iptype($ip) == ipv4) {
  echo -ag $ip is an IPv4 address
}
elseif ($iptype($ip) == ipv6) {
  echo -ag $ip is an IPv6 address, compressed: $iptype($ip).compress ; expanded: $iptype($ip).expand
}

This echos the IP type if valid of the local ip address.