php - 如何将数组键提取到数组 PHP 中的字符串

Question

我需要将关联数组键提取到字符串中并用“/”或任何字符/符号内爆。

例如:

$array = array([key1] => 
                array([key11] => 
                     array([key111] => 'value111', 
                           [key112] => 'value112', 
                           [key113] => 'value113',
                          ),
                 ),
           );

我需要一个如下数组的输出:

array([0] => 'key1/key11/key111',[1] => 'key1/key11/key112', [2] => 'key1/key11/key112');

Answer 1

我已经编辑了给出的答案 here并提出了以下代码。

function listArrayRecursive($someArray, &$outputArray, $separator = "/") {
    $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($someArray), RecursiveIteratorIterator::SELF_FIRST);
    foreach ($iterator as $k => $v) {

        if (!$iterator->hasChildren()) {
            for ($p = array(), $i = 0, $z = $iterator->getDepth(); $i <= $z; $i++) {
                $p[] = $iterator->getSubIterator($i)->key();
            }
            $path = implode($separator, $p);
            $outputArray[] = $path;
        }
    }
}

$outputArray = array();
listArrayRecursive($array, $outputArray);
print_r($outputArray);

输入:

Array
(
    [key1] => Array
        (
            [key11] => Array
                (
                    [key111] => value111
                    [key112] => value113
                    [key113] => value113
                )
        )
)

输出:

Array
(
    [0] => key1/key11/key111
    [1] => key1/key11/key112
    [2] => key1/key11/key113
)