如何让有1-N含量PHP中的multidmentional阵列的叶节点值 [英] how to get the leaf node values of a multidmentional array which has 1-N levels PHP

问题描述

我有一个这样的数组：

Array
(
    [23] => 540,
    [25] => Array
        (
            [656] => Array(671 ,680),
            [345] => 400
        )
)

我想要得到的值：

I want to get the values:

540 , 671 ,680 , 400

对于我的问题是，这个阵列的增长，不知道有多少层次深，

The problem for me is, that this array is growing and don't know how many levels deep,

推荐答案

您可以使用SPL公司的 RecursiveArrayIterator 和的 RecursiveIteratorIterator 与 LEAVES_ONLY 标记。

You can use SPL's RecursiveArrayIterator and RecursiveIteratorIterator with its LEAVES_ONLY flag.

自足例如：

<?php
$rai = new RecursiveArrayIterator(getData());
// $rii = new RecursiveIteratorIterator($rai, RecursiveIteratorIterator::LEAVES_ONLY) - but this is the default
$rii = new RecursiveIteratorIterator($rai);
foreach($rii as $n) {
    echo $n, "\n";
}

// test data source    
function getData() {
    return array(
        23 => 540,
            25 => array(
                656 => array(671,680),
                345 => 400
            )
    );
}

打印

540
671
680
400

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