Returns TRUE if every character in text is either a letter or a digit, FALSE otherwise. In the standard C locale letters are just [A-Za-z]. The function is equivalent to (ctype_alpha($text) || ctype_digit($text)).
See also ctype_alpha(), ctype_digit(), and setlocale().
| Пред. | Начало | След. |
| Character type functions | Уровень выше | ctype_alpha |