Use the CFSET tag to define a ColdFusion variable. If the variable already exists, CFSET resets it to the specified value.


<CFSET variable_name=expression>


The following example assigns a new array to the variable "months".

<CFSET months=ArrayNew(1)>

This example creates a variable "Array_Length" that resolves to the length of the array "Scores".

<CFSET Array_Length=ArrayLen(Scores)>

This example assigns to index position two in the array "months" the value "February".

<CFSET months[2]="February">


<!--- This example shows how to use CFSET --->

FROM     Employees


CFSET Example

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<BODY  bgcolor="#FFFFD5">

<H3>CFSET Example</H3>

<P>CFSET allows you to set and reassign values to local or
global variables within a CF template.

<CFSET NumRecords = GetEmployeeInfo.RecordCount>
<P>For example, the variable NumRecords has been declared on
this template to hold the number of records returned from
our query (<CFOUTPUT>#NumRecords#</CFOUTPUT>).

<P>In addition, CFSET can be used to pass variables from other 
pages, such as this example which takes the url parameter
Test from this link (<a 
hey, you, get off of my cloud")#</CFOUTPUT>">click here</A>) to display 
a message: 
<P><CFIF IsDefined ("url.test") is "True">
    <H3>The variable url.test has not been passed from
    another page.</H3>

<P>Finally, CFSET can also be used to collect environmental
variables, such as the time, the ip of the user, or any
other function or expression possible in Cold Fusion.

<CFSET the_date = #DateFormat(Now())# & " " & #TimeFormat(Now())#>
<CFSET complex_expr = (23 MOD 12) * 3>
<CFSET str_example = "#GetEmployeeInfo.FirstName# 
#GetEmployeeInfo.LastName#" >

    <LI>The date: #the_date#
    <LI>User IP Address: #user_ip#
    <LI>Complex Expression ((23 MOD 12) * 3): #complex_expr#
    <LI>String Manipulation (the first 35 characters of
    the body of the first message in our query)
    <BR><B>Normal</B> :#str_example#
    <BR><B>Reversed</B>: #Reverse("#str_example#")#