在PHP中回显多维数组

Question

我有一个多维数组,我试图找出如何简单地"回显"数组的元素.数组的深度未知,因此可以深度嵌套.

在下面的数组的情况下,回显的正确顺序是:

This is a parent comment
This is a child comment
This is the 2nd child comment
This is another parent comment

这是我正在谈论的数组:

Array
(
    [0] => Array
        (
            [comment_id] => 1
            [comment_content] => This is a parent comment
            [child] => Array
                (
                    [0] => Array
                        (
                            [comment_id] => 3
                            [comment_content] => This is a child comment
                            [child] => Array
                                (
                                    [0] => Array
                                        (
                                            [comment_id] => 4
                                            [comment_content] => This is the 2nd child comment
                                            [child] => Array
                                                (
                                                )
                                        )
                                )
                        )
                )
        )

    [1] => Array
        (
            [comment_id] => 2
            [comment_content] => This is another parent comment
            [child] => Array
                (
                )
        )
)

Answer 1

<pre>
<?php print_r ($array); ?>
</pre>

Answer 2

看起来你只是想从每个数组中写一个重要的值.尝试像这样的递归函数:

function RecursiveWrite($array) {
    foreach ($array as $vals) {
        echo $vals['comment_content'] . "\n";
        RecursiveWrite($vals['child']);
    }
}

您还可以使它更具动态性,并将'comment_content'和'child'字符串作为参数传递给函数(并在递归调用中继续传递它们).

Answer 3

正确,更好,更清洁的解决方案:

function traverseArray($array)
{
    // Loops through each element. If element again is array, function is recalled. If not, result is echoed.
    foreach ($array as $key => $value)
    {
        if (is_array($value))
        {
            Self::traverseArray($value); // Or
            // traverseArray($value);
        }
        else
        {
            echo $key . " = " . $value . "<br />\n";
        }
    }
}

您只需在traverseArray($array)当前/主类中调用此辅助函数,如下所示:

$this->traverseArray($dataArray); // Or
// traverseArray($dataArray);

来源:http://snipplr.com/view/10200/recursively-traverse-a-multidimensional-array/