Question

我试图得到它，以便输出如下（当前）：

┌── Level 0 Child 1
└── Level 0 Child 2
|   ├── Level 1 Child 1
|   |   └── Level 1 Child 1 Grandchild 1
|   └── Level 1 Child 2
|   |   ├── Level 1 Child 2 Grandchild 1
|   |   |   ├── Level 1 Child 2 Grandchild 1 Great-grandchild 1
|   |   |   ├── Level 1 Child 2 Grandchild 1 Great-grandchild 2
|   |   |   └── Level 1 Child 2 Grandchild 1 Great-grandchild 3
|   |   └── Level 1 Child 2 Grandchild 2
|   |   |   └── Level 1 Child 2 Grandchild 2 Great-grandchild 1

是正确的。

显然，我想要的实际结果是，如果该节点已经到达行└──的末尾，则不是每个正方形都有垂直线。

这是我目前的代码：

function makeList(array $array, $level = 0, $very_first_item = true)
{
    $output = "\n";
    $count = 0;
    foreach ($array as $key => $subArray) {
        if($count == count($array) - 1) {
            $prefix = str_repeat('|   ', $level) . '└── ';
        } elseif($very_first_item === true) {
            $prefix =  str_repeat('|   ', $level) . '┌── ';
        } else {
            $prefix = str_repeat('|   ', $level) . '├── ';
        }
        $very_first_item = false;
        $output .= $prefix . $key . makeList($subArray, $level + 1, $very_first_item);
        $count++;
    }

    return $output;
}

这是要传入的数组：

array(
    'Level 0 Child 1' =>
        array(),
    'Level 0 Child 2' =>
        array(
            'Level 1 Child 1' =>
                array(
                    'Level 1 Child 1 Grandchild 1' =>
                        array(),
                ),
            'Level 1 Child 2' =>
                array(
                    'Level 1 Child 2 Grandchild 1' =>
                        array(
                            'Level 1 Child 2 Grandchild 1 Great-grandchild 1' =>
                                array(),
                            'Level 1 Child 2 Grandchild 1 Great-grandchild 2' =>
                                array(),
                            'Level 1 Child 2 Grandchild 1 Great-grandchild 3' =>
                                array(),
                        ),
                    'Level 1 Child 2 Grandchild 2' =>
                        array(
                            'Level 1 Child 2 Grandchild 2 Great-grandchild 1' =>
                                array(),
                        ),
                ),
        ),
);

Answer 1

请检查此代码是否可以为您提供帮助。

我更改了您的makeList函数，还添加了另一个名为array_depth的函数，该函数使用this post计算数组的深度，并在您的末尾添加了另一个节点用于检查代码是否正常工作的数组。所以，这是代码：

$myArr = array(
    'Level 0 Child 1' => array(),
    'Level 0 Child 2' => array(
        'Level 1 Child 1' => array(
            'Level 1 Child 1 Grandchild 1' => array(),
        ),
        'Level 1 Child 2' => array(
            'Level 1 Child 2 Grandchild 1' =>   array(
                'Level 1 Child 2 Grandchild 1 Great-grandchild 1' => array(),
                'Level 1 Child 2 Grandchild 1 Great-grandchild 2' => array(),
                'Level 1 Child 2 Grandchild 1 Great-grandchild 3' => array(),
            ),
            'Level 1 Child 2 Grandchild 2' => array(
                'Level 1 Child 2 Grandchild 2 Great-grandchild 1' => array(),
            ),
        ),
    ),
    'Level 0 Child 3' => array(
        'Level 1 Child 1' => array(
            'Level 1 Child 1 Grandchild 1' => array(),
        ),
    )
);

function array_depth(array $array){
    $max_depth = 1;

    foreach ($array as $value){
        if (is_array($value)){
            $depth = array_depth($value) + 1;

            if ($depth > $max_depth){
                $max_depth = $depth;
            }
        }
    }

    return $max_depth;
}


function makeList(array $array, $level = 0, $very_first_item = true)
{
    global $arrLines;
    $output = "\n";
    $count = 0;
    foreach ($array as $key => $subArray) {
        if($count == count($array) - 1) {
            $prefix = '└── ';
            $arrLines[$level + 1] = '    ';
        } elseif($very_first_item === true) {
            $prefix =  '┌── ';
            $arrLines[$level + 1] = '|   ';
        } else {
            $prefix = '├── ';
            $arrLines[$level + 1] = '|   ';
        }
        $very_first_item = false;
        for($iCnt = 1; $iCnt <= $level; $iCnt++)
            $output .=  $arrLines[$iCnt];
        $output .= $prefix . $key . makeList($subArray, $level + 1, $very_first_item);
        $count++;
    }

    return $output;
}

$arrLines = array(array_depth($myArr));
echo '<pre>'.makeList($myArr).'</pre>';

检查是否存在阵列的先前节点

1 个答案: