ctype_alnum(mixed $text) : bool
ctype_alpha(mixed $text) : bool
ctype_cntrl(mixed $text) : bool
ctype_digit(mixed $text) : bool
ctype_graph(mixed $text) : bool
ctype_lower(mixed $text) : bool
ctype_print(mixed $text) : bool
ctype_punct(mixed $text) : bool
ctype_space(mixed $text) : bool
ctype_upper(mixed $text) : bool
ctype_xdigit(mixed $text) : bool