(PHP 4 >= 4.0.7, PHP 5, PECL ncurses:1.0.0)
ncurses_beep — Let the terminal beep
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.
ncurses_beep() sends an audible alert (bell) and if its not possible flashes the screen.