CFLib.org – Common Function Library Project

Description:
This UDF confirms that a string only contains letters, spaces, and periods.

Return Values:
Returns a boolean.

Example:

<CFSET strA = "abcde">
<CFSET strB = "abc de">
<CFSET strC = "abc.de">
<CFSET strD = "abc*de">
<CFSET strE = "abc1de">
<CFOUTPUT>
#strA# --- #IsAlphabet(strA)#<BR>
#strB# --- #IsAlphabet(strB)#<BR>
#strC# --- #IsAlphabet(strC)#<BR>
#strD# --- #IsAlphabet(strD)#<BR>
#strE# --- #IsAlphabet(strE)#<BR>
</CFOUTPUT>

Parameters:

Full UDF Source:

/**
 * This UDF confirms whether a string contains only letters.
 * 
 * @param str      String to check. (Required)
 * @return Returns a boolean. 
 * @author Takaki Saito (saito@softai.co.jp) 
 * @version 1, June 21, 2002 
 */
function IsAlphabet(str) {
    return not reFindNoCase("[^a-z\.[:space:]]",str);
}