Yesterday I was helping someone with a problem, they kept receiving an “Cannot declare a local variable …. twice” error in one their DAO methods. It took us a couple of minutes to figure out how we were declaring the variable twice. Come to find out var and cfargument are both in the local variable scope at least.
<cffunction name="getName" acces="public" returntype="struct" output="false"> <cfargument name="userID" type="Numeric" required="true" /> <cfset var userID = "" /> <!--- Conflicts with arguments.userID ---> <cfset var MyResults = StructNew() /> <cfset MyResults.ResultCode = 200 /> <cfset MyResults.ResultMessages = ArrayNew(1) /> <!--- Your code here ---> <cfreturn MyResults /> </cffunction>
I will will be testing this on Railo and CF9 to see if they behave the same way….