CFLib.org – Common Function Library Project

Description:
You pass in a variable, and I will return either a "1" if it evaluates to true, or a "0" if it is not a boolean (as in an empty string or any other non-boolean) or evaluates to false.

Return Values:
Returns a boolean.

Example:

<cfset i="">
<cfif i></cfif> returns error.
<ciff forceBoolean(i)></cfif> works.
#forceBoolean(i)# returns "0".

Parameters:

Full UDF Source:

/**
 * Returns a boolean 1/0 from anything, including empty strings.
 * 
 * @param bool      Value to check. (Required)
 * @return Returns a boolean. 
 * @author Alan McCollough (amccollough@anthc.org) 
 * @version 1, September 5, 2010 
 */
function forceBoolean(bool){
  if(isBoolean(bool) AND bool IS TRUE)
     return "1";
  else
     return "0";
}