ctype_digit

(PHP 4 >= 4.0.4)

ctype_digit -- Check for numeric character(s)

Description

bool ctype_digit (string c)

주의

This module is EXPERIMENTAL. That means, that the behaviour of these functions, these function names, in concreto ANYTHING documented here can change in a future release of PHP WITHOUT NOTICE. Be warned, and use this module at your own risk.