FUNC :: boolean is_alpha ( string test [, boolean add_numeric [, string additional ]] ) Returns TRUE if is alpha, FALSE if not. boolean add_numeric default value are: false Example:
$test = 'XPertMailer V.2'; // including numbers, space and dot echo FUNC::is_alpha($test, true, ' .') ? 'Yes' : 'No'; // by default, only letters (small and capital) // echo FUNC::is_alpha($test) ? 'Yes' : 'No';