(PHP 4 >= 4.0.7, PHP 5 < 5.3.0, PECL ncurses >= 1.0.0)
ncurses_flash — Flash terminal screen (visual bell)
This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk.
Flashes the screen, and if its not possible, sends an audible alert (bell).
FALSE on success, otherwise