清除CMD-shell与php [英] Clear CMD-shell with php

问题描述

我有这个简单的php脚本，每秒输出一个字符串。

I have this simple php script which outputs a string every second.

<?php
$i = 1;

while(1)
{
    exec("cls");    //<- Does not work
    echo "test_".$i."\n";

    sleep(1);
    $i++;
}

我在Windows上的命令shell中执行脚本（ php myscript.php ），并尝试在每个周期之前清除命令shell。但我不会让它工作。任何想法？

I execute the script in the command shell on windows (php myscript.php) and try to clear the command shell before every cycle. But I don't get it to work. Any ideas?

推荐答案

如何？

<?php
$i = 1;
echo str_repeat("\n", 300); // Clears buffer history, only executes once
while(1)
{
    echo "test_".$i."\r"; // Now uses carriage return instead of new line

    sleep(1);
    $i++;
}

str_repeat（）函数在和循环之外执行，而不是用一个新行结束每个回声，它将指针移回到现有行，并在其顶部写入。

the str_repeat() function executes outside of the while loop, and instead of ending each echo with a new line, it moves the pointer back to the existing line, and writes over the top of it.

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