如何在 php cli 中清除屏幕（如 cls 命令）
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How can clear screen in php cli (like cls command)
提问by Root
When PHP script run from command line (windows) , how can clear the console screen from script .
当 PHP 脚本从命令行（Windows）运行时，如何从脚本中清除控制台屏幕。
for example :
例如 ：
while(true){
// sleep for 10 seconds , then clear the console
sleep(10);
// below command execute to clear the console windows
**COMMAND**
}
采纳答案by Olivier
For Windows users :
对于 Windows 用户：
system('cls');
For Linux users :
对于 Linux 用户：
system('clear');
回答by M. Chris
If you did not have any luck with the solutions above, consider the following
如果您对上述解决方案没有任何运气，请考虑以下问题
echo chr(27).chr(91).'H'.chr(27).chr(91).'J'; //^[H^[J
Hope it will help.
希望它会有所帮助。
Source : http://pank.org/blog/2011/02/php-clear-terminal-screen.html
来源：http: //pank.org/blog/2011/02/php-clear-terminal-screen.html
回答by trejder
Found a solution, that works in both cmdand GitBash. However, this is the ugliest implementation of clearing console-screen I can think of. Pity, that there isn't any working alternative.
找到了一个解决方案，它适用于cmdGitBash 和 GitBash。然而，这是我能想到的最丑陋的清除控制台屏幕的实现。遗憾的是，没有任何可行的替代方案。
The "magic" is to... poke console with fifty new-lines, like that:
“魔术”是……用五十个新行戳控制台，就像这样：
public function clearStdin()
{
for ($i = 0; $i < 50; $i++) echo "\r\n";
}
This is a modified (fixed?) version of this non-working (for me) post from 2006.
这是2006 年这篇非工作（对我而言）帖子的修改（固定？）版本。
回答by Robin Rijkeboer
You can do this by using:
您可以使用以下方法执行此操作：
ncurses_clear();
Source: http://www.php.net/manual/en/function.ncurses-clear.php
来源：http: //www.php.net/manual/en/function.ncurses-clear.php
Edit: As trejder says this solution is only for supported platforms, it seems windows is not one of them.
编辑：正如 trejder 所说，此解决方案仅适用于受支持的平台，似乎 windows 不是其中之一。
