PHP 忒聊 綴豖 ヶ輛 ctype_digit (PHP 4 = 4.0.4) Description Returns TRUE if every character in text is a decimal digit, FALSE otherwise. See also ctype_alnum() and ctype_xdigit(). 綴豖 れ萸 ヶ輛 ctype_cntrl 奻珨撰 ctype_graph