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:

<cfscript>
/**
 * 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 (&#106;&#95;&#112;&#105;&#99;&#107;&#97;&#114;&#100;&#64;&#104;&#111;&#116;&#109;&#97;&#105;&#108;&#46;&#99;&#111;&#109;) 
 * @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;
}
</cfscript>