PHP 매뉴얼
이전다음

XVI. Character type functions

주의

This extension is EXPERIMENTAL. The behaviour of this extension, including the names of its functions, and anything else documented about this extension may change in a future release of PHP without notice. Be warned and use this extension at your own risk.

These functions check whether a character or string falls into a certain character class according to the i current locale.

When called with an integer argument theese functions behave exactly like their C counterparts.

When called with a string argument they will check every character in the string and will only return TRUE if every character in the string matches the requested criteria.

Passing anything else but a string or integer will return FALSE immediately.

주의

These functions are new as of PHP 4.0.4 and might change their name in the near future. Suggestions are to change them to ctype_issomething() instead of ctype_somthing() or even to make them part of ext/standard and use their original C-names, although this would possibly lead to further confusion regarding the isset() vs. is_sometype() problem.

차례
ctype_alnum -- Check for alphanumeric character(s)
ctype_alpha -- Check for alphabetic character(s)
ctype_cntrl -- Check for control character(s)
ctype_digit -- Check for numeric character(s)
ctype_graph -- Check for any printable character(s) except space
ctype_lower -- Check for lowercase character(s)
ctype_print -- Check for printable character(s)
ctype_punct --  Check for any printable character which is not whitespace or an alphanumeric character
ctype_space -- Check for whitespace character(s)
ctype_upper -- Check for uppercase character(s)
ctype_xdigit --  Check for character(s) representing a hexadecimal digit
이전처음으로다음
cyrus_unbind위로ctype_alnum