Format US phone number.

gistfile1.cfc

public string function formatPhoneNumber(string phone){
    var clean_number = Right( ReReplaceNoCase(arguments.phone, "[^\d]", "", "ALL"), 10);
    
    if( Len(clean_number) == 10){
        return '('& Left(clean_number,3) &') '& Mid(clean_number,4,3) &'-'& Right(clean_number,4);
    }else{
        throw('Phone number is to short.', 'InvalidArgument');
    }
};