PHP 忒聊 綴豖 ヶ輛 ctype_alnum (PHP 4 = 4.0.4) Description 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(). 綴豖 れ萸 ヶ輛 Character type functions 奻珨撰 ctype_alpha