CFLib.org – Common Function Library Project

Description:
This function checks if the passed string is alphanumeric.

Return Values:
Returns a Boolean value.

Example:

<CFSET x="abc123">
<CFSET y="$123">

<CFOUTPUT>
Is "#x#" alphanumeric? #YesNoFormat(IsAlphanumeric(x))#<BR>
Is "#y#" alphanumeric? #YesNoFormat(IsAlphanumeric(y))#
</CFOUTPUT>

Parameters:

Full UDF Source:

/**
 * Checks if a string is alphanumeric
 * 
 * @param str      String you want to check. 
 * @return Returns a Boolean value. 
 * @author Marcus Raphelt (cflib@raphelt.de) 
 * @version 1, November 2, 2001 
 */
function IsAlphanumeric(str) {
  if (REFindNoCase("[^a-z0-9]", str) eq 0)
    return true;
  else
    return false;
}