php - 如何在 PHP 中转换数组 [嵌套]

Question

拜托，我需要帮助。如何通过 PHP 转换我的数组

Array
(
    [0] => Apple
    [1] => Orange
    [2] => Tomato
)

为此

Array
(
    [Apple] => Array
        (
            [Orange] => Array
                (
                    [Tomato] => Array()
                )

        )

)

而且我不知道我的数组中有多少个元素。谢谢大家。

Answer 1

输出

Array
(
    [0] => Apple
    [1] => Orange
    [2] => Tomato
    [3] => Banana
    [4] => Papaya
)
Array
(
    [Apple] => Array
        (
            [Orange] => Array
                (
                    [Tomato] => Array
                        (
                            [Banana] => Array
                                (
                                    [Papaya] => Array
                                        (
                                        )

                                )

                        )

                )

        )

)

代码

$fruits = [

  "Apple",
  "Orange",
  "Tomato",
  "Banana",
  "Papaya"

];

// Result Array

$result = [

  $fruits[count($fruits) - 1] => []

];

// Process

for ($counter = count($fruits) - 2; $counter >= 0; $counter--) {

  $temp = $result;

  unset($result);

  $result[$fruits[$counter]] = $temp;

}

// Display

echo "<pre>".print_r($fruits, true)."</pre>";
echo "<pre>".print_r($result, true)."</pre>";