ctype_cntrl

(PHP 4 >= 4.0.4)

ctype_cntrl -- Check for control character(s)

Description

bool ctype_cntrl (string c)

Warning

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