(PHP 4 >= 4.0.7, PHP 5 < 5.3.0, PECL ncurses >= 1.0.0)
ncurses_slk_init — Initializes soft label key functions
$format
)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 。
Initializes soft label key functions
This function must be called before ncurses_init() or ncurses_newwin() is called.
format
If ncurses_init() eventually uses a line from stdscr to emulate the soft labels, then this parameter determines how the labels are arranged of the screen.
0 indicates a 3-2-3 arrangement of the labels, 1 indicates a 4-4 arrangement and 2 indicates the PC like 4-4-4 mode, but in addition an index line will be created.
成功时返回 TRUE， 或者在失败时返回 FALSE。