PHP 忒聊 綴豖 ヶ輛 ctype_cntrl (PHP 4 = 4.0.4) Description Returns TRUE if every character in text has a special control function, FALSE otherwise. Control characters are e.g. line feed, tab, esc. 綴豖 れ萸 ヶ輛 ctype_alpha 奻珨撰 ctype_digit