Warning: This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.
Disables line buffering and character processing (interrupt and flow
control characters are unaffected), making characters typed by the user
immediately available to the program.
Return Values
Returns TRUE
or NCURSES_ERR if any error occurred.