PHP移动数组项显示正确的数组但写错了吗？ [英] PHP Moving Array Item Shows Correct Array but Writes Wrong?

问题描述

具有将数组元素上移一个空格的代码。

URL加载：
action？p = ArrayNumber

Have a code that shifts an element of an array up one space.
URL loads: action?p=ArrayNumber

if (isset($_GET['p'])) {
    $index = $_GET['p'];
    $panel_dir = 'host.txt';
    $panel_data = file($panel_dir);

    $pos = $panel_data[$index];
    $panel_data[$index] = $panel_data[$index-1];
    $panel_data[$index-1] = $pos;

    $f_panel = fopen($panel_dir, "w+");
    foreach($panel_data as $panel_line) {
        fwrite($f_panel, $panel_line);
    }
    fclose($f_panel);  
}

内容如何开始：

Array ( [0] => Name [1] => List [2] => Folder [3] => Host )

当print_r（$ panel_data）;正确显示的数组：

When print_r($panel_data); the array it shows up correctly:

Array ( [0] => Name [1] => List [2] => Host [3] => Folder )

当echo implode（$ panel_data）;数组结合了移动的元素：

When echo implode($panel_data); the array combines the moved element:

Name List HostFolder

this（?!）的Bcz，似乎将它们组合而不是换行。它确实会按需要移动它，但是..不知道合并的来源。

Bcz of this(?!), it seems to write them combined instead of a new line. It does move it as desire but .. no idea where the combining is coming from.

Name  
List  
HostFolder

推荐答案

使用内爆（ \n，$ array）; 将行写入到您的文件中。

Use implode("\n", $array); to write lines in to you file.

以下是工作示例：

    $array = [
        'Name',
        'List',
        'Folder',
        'Host'
    ];
    $host = $array[3];
    $array[3] = $array[3-1];
    $array[3-1] = $host;
    echo implode("\n", $array);

结果：

Name
List
Host
Folder

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