(PHP 4 >= 4.0.7, PHP 5 < 5.3.0, PECL ncurses >= 1.0.0)
ncurses_cbreak — Switch off input buffering
此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担 。
Disables line buffering and character processing (interrupt and flow control characters are unaffected), making characters typed by the user immediately available to the program.
Returns TRUE or NCURSES_ERR if any error occurred.