User Guide

20 CFML Quick Reference
ColdFusion Variables
ColdFusion returns a wide variety of variables, such as those
returned in a CFDIRECTORY or CFFTP operation. Variables
are usually referenced by "scoping" the variable according to
its type, as in Session.varname, or Application.varname.
Variable scope
ColdFusion supports the Variables scope. Unscoped vari-
ables created with the CFSET tag acquire the Variables scope
by default. For example, the variable created by:
<CFSET linguist = Chomsky>
can be referenced as:
#Variables.linguist#
Client variables
These client variables are read-only:
Client.CFID
Client.CFToken
Client.HitCount
Client.LastVisit
Client.TimeCreated
Client.URLToken
Server variables
Use the Server. prefix to reference server variables:
Server.ColdFusion.ProductName
Server.ColdFusion.ProductVersion
Server.ColdFusion.ProductLevel
Server.ColdFusion.SerialNumber
Server.ColdFusion.SupportedLocales
Server.OS.Name
Server.OS.AdditionalInformation
Server.OS.Version
Server.OS.BuildNumber
Application and session variables
Use CFAPPLICATION to enable application and session vari-
ables. They are referenced as:
Application.myvariable
Session.myvariable
Use CFLOCK to ensure that modifications to shared data
occur one after another. See CFML Language Reference
description of CFLOCK for details.
The predefined application and session variables are:
Application.ApplicationName
Session.CFID
Session.CFToken
Session.URLToken