CFLib.org – RandomizeString

RandomizeString(theString, theLength)

Last updated May 9, 2009

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author

Stephen Withington
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Version: 0 | Requires: ColdFusion 5 | Library: StrLib

Rated 4 time(s). Average Rating: 4.8

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:

Name	Description	Required
theString	string of text to randomize	Yes
theLength	length of random string to create	Yes

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 (steve@stephenwithington.com) 
 @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>