How to reference a variable via a string?

[jonhodgkinson]

Hi, is it possible through CF to reference a variable via a string? i.e. I have the form variable 1_Email_145 and I want to get the value of this from by: function("1_Email_145&quot

I hope that makes sense, thanks for your help!

 

[SidianConsulting]

The first thing you should know is, you can't have a variable name that starts with a number, so FORM.1_Email_145 is not valid. To create dynamic variables, have a look at my response in this thread:

thread232-596971

-Tek

 

[hyrogen]

I had a similar problem to this, I used Evaluate("String&quot to solve the problem. However, I am now struggling with something else. I basically want to test if the variable is defined ie.

isdefined(Evaluate("String&quot)

but this keeps giving a syntax error.

Thanks in advance for any help.

 

[SidianConsulting]

IsDefined() performs an implicit evaluation, so you could do:

<cfset i = 1>
<cfif IsDefined(&quot;myvar&quot; & i)>
   <!--- Does the variable myvar1 exist? --->
</cfif>

-Tek