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PHP - Manual: ncurses_clear

2024-05-03

ncurses_clear

(PHP 4 >= 4.0.7, PHP 5 < 5.3.0, PECL ncurses >= 1.0.0)

ncurses_clearClear screen

说明

ncurses_clear ( void ) : bool
Warning

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 。

Clears the screen completely without setting blanks.

Note: ncurses_clear() clears the screen without setting blanks, which have the current background rendition. To clear screen with blanks, use ncurses_erase().

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE

参见

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User Contributed Notes 1 note

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-1
areaz at dotgeek org
15 years ago
When your script exits, after ncurses_clear() was called, it could leave your terminal in an inconsistent state.

Therefore, you should call ncurses_savetty() in a constructor and nurses_resetty() in a destructor, to ensure, that your terminal is working fine after your script exits.

Here is an example code snippet, on how to use this function, without falling into trouble ;-)

<? // PHP5 Example

class foo
{
    /* Foo constructor */
    function __construct()
    {
        /* Initialize ncurses first */
        ncurses_init();

        /* Save your tty !!! */
        ncurses_savetty();
    }

    function bar ()
    {
        /* Clear the screen and wait a few seconds */
        ncurses_clear();

        sleep(5);
    }

    /* Foo destructor */
    function __destruct()
    {
        /* Restore your terminal settings */
        ncurses_resetty();

        /* End ncurses and clean up */
        ncurses_end();
    }

}

$test_ncurses = new foo;
$test_ncurses->bar();
?>

官方地址:https://www.php.net/manual/en/function.ncurses-clear.php

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