PHP Functions Essential Reference

ip2long

int ip2long(string ip_address) 

Converts a dotted-quad address into a decimal, IPv4 network address.

Returns:

Signed integer

Description:

ip2long() converts a dotted-quad format IP address (xxx.xxx.xxx.xxx) to a decimal, IPv4 network address. Add pow(2,32) (4,294,967,296) to “unsign” the value.

Availability:

UNIX, Windows

Version:

4.0b4+

See also:

long2ip() 

Example:

23.13. Convert an IP address from one format to another

$IP = '63.69.110.220'; // We add 2^32 (4,294,967,296) to unsign the value echo "The dotted-quad format IP address $IP is equivalent to ", ip2long ($IP) + pow(2,32);