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.
Clears the screen completely without setting blanks.
Note: ncurses_clear() clears the screen without
setting blanks, which have the current background rendition. To
clear screen with blanks, use ncurses_erase().
Return Values
Returns TRUE
on success or FALSE
on failure.