ctype_xdigit
(PHP 4 >= 4.0.4)
ctype_xdigit --
Check for character(s) representing a hexadecimal digit
Description
bool
ctype_xdigit ( string c)
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 without notice in a future release of PHP.
Use this extension at your own risk. |