CFLib.org – Common Function Library Project

Description:
Pass in a string and I'll return a randomized string value at the length you desire.

Return Values:
returns a string

Example:

<cfoutput>#RandomizeString("0123456789ABCDEF", 32)#</cfoutput>

Parameters:

Full UDF Source:

<!---
 I generate a randomized string of desired length.
 
 @param theString 	 string of text to randomize (Required)
 @param theLength 	 length of random string to create (Required)
 @return returns a string 
 @author Stephen Withington (&#115;&#116;&#101;&#118;&#101;&#64;&#115;&#116;&#101;&#112;&#104;&#101;&#110;&#119;&#105;&#116;&#104;&#105;&#110;&#103;&#116;&#111;&#110;&#46;&#99;&#111;&#109;) 
 @version 0, May 9, 2009 
--->
<cffunction name="RandomizeString" returntype="string" output="false" access="public" 
			hint="pass me a string and desired length and i'll randomize it for you.">
	<cfargument name="theString" type="string" required="true" default="0123456789ABCDEF" />
	<cfargument name="theLength" type="numeric" required="true" default="32" />
	<cfset var randomizedString = "" />
	<cfset var theIndex = "" />

	<cfloop index="theIndex" from="1" to="#val(arguments.theLength)#" step="1">
		<cfset randomizedString = randomizedString & mid(arguments.theString, rand()*len(arguments.theString)+1, 1) />
	</cfloop>
	<cfreturn randomizedString />	
</cffunction>