CFLib.org – Common Function Library Project

Description:
Use IPDottedDecimal2IPAddress to convert an IP dotted decimal value to an IP address string. Storing decimal values in a database and making comparisons with them is more efficient than using IP address strings.

Return Values:
Returns a string.

Example:

<cfoutput>
#IPDottedDecimal2IPAddress( -1062731769)#
</cfoutput>

Parameters:

Full UDF Source:

/**
 * Converts a 32-bit dotted decimal IP number to an IP address.
 * 
 * @param ipValue      Dotted decimal value of IP address. (Required)
 * @return Returns a string. 
 * @author Jonathan Pickard (j_pickard@hotmail.com) 
 * @version 1, September 27, 2002 
 */
function IPDottedDecimal2IPAddress( ipvalue ) {
    var ipAddress = "";
    var lBitMasks = "24,16,8,0";
    var i = 1;

    for ( ; i LTE 4; i = i + 1 )
    {
        ipAddress = ipAddress & "." & BitMaskRead( ipvalue, ListGetAt( lBitMasks, i ), 8 );
    }
    ipAddress = Right( ipAddress, Len( ipAddress ) - 1 );

    return ipAddress;
}