IPConvert(ip or numeric version)
Last updated August 28, 2003
Version: 1 | Requires: ColdFusion 5 | Library: NetLib
Description:
IPConvert converts valid IP addresses into integers and back again. This is useful for storing IP information in a database using the int datatype rather than char.
Return Values:
Returns either a number of an IP.
Example:
<cfset ip=IPConvert(int)>
<cfoutput>
Converted to: #int#<br>
Converted back to: #ip#
</cfoutput>
Parameters:
| Name | Description | Required |
|---|---|---|
| ip or numeric version | IP or numeric version of IP. | Yes |
Full UDF Source:
<cfscript>
/**
* Converts IPs to integers and back for efficient database storage.
*
* @param ip or numeric version IP or numeric version of IP. (Required)
* @return Returns either a number of an IP.
* @author Aaron Eisenberger (aaron@x-clothing.com)
* @version 1, August 28, 2003
*/
function IPConvert(val) {
var int = '';
var ip = arraynew(1);
if (find('.',val))
{
int = 0;
int = ListGetAt(val, 1, ".") * 256^3;
int = int + ListGetAt(val, 2, ".") * 256^2;
int = int + ListGetAt(val, 3, ".") * 256;
int = int + ListGetAt(val, 4, ".");
return int;
}
else
{
int = val;
ip[1] = Int(int / 256^3);
int = int - (ip[1] * 256^3);
ip[2] = int(int / 256^2);
int = int - (ip[2] * 256^2);
ip[3] = int(int / 256);
ip[4] = int - (ip[3] * 256);
ip = ip[1] & "." & ip[2] & "." & ip[3] & "." & ip[4];
return ip;
}
}
</cfscript>
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