(PHP 4 >= 4.0.7, PHP 5, PECL ncurses:1.0.0)
ncurses_flash — Flash terminal screen (visual bell)
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.
Flashes the screen, and if its not possible, sends an audible alert (bell).
Returns FALSE on success, otherwise TRUE.