(PHP 4 >= 4.0.4)
ctype_xdigit --
Check for character(s) representing a hexadecimal digit
Description
bool ctype_xdigit (string c)
| Warning |
This function is EXPERIMENTAL. That means, that the behaviour of this function, this function name, in concreto ANYTHING documented here can change in a future release of PHP WITHOUT NOTICE. Be warned, and use this function at your own risk. |