php - php数组移位键多维数组

Question

我有一个这样的数组。

$array = array ( '18' => array (  '1' =>'', '14' =>''),
                 '23' => array ( '24' =>''), 
                 '24' => array ( '25' =>'', '26' =>''),
                 '26' => array ( '27' =>'', '28' =>''), 
                 '30' => array ( '23' =>'', '31' =>'')
                );

我希望这个数组像这样重新排列。

 Array 
(
[18] => Array
    (
    [1] =>
    [14] =>
    )
[30] => Array
    (
    [23] => Array
       ( 
        [24] => Array
           ( 
            [25] =>
            [26] => Array
               ( 
                [27] =>
                [28] =>
               )
           )
      )
   )
)

我感谢某人的帮助。

Answer 1

这个脚本太接近了，但是在 24 索引之后有一些问题

<?php 

class arrayTest
{
    //create the array
    public $array = array ( '18' => array ( '1' => '', '14' => ''),
        '23' => array ( '24' =>''),
        '24' => array ( '25' =>'', '26' =>''),
        '26' => array ( '27' =>'', '28' =>''),
        '30' => array ('23'=>'','31'=>'')
        );

    public $data = array();

    public function index()
    {
        //data array
        $data =array();

        //process each key of the array
        foreach($this->array as $key=>$val)
        {
            //check the key value
            if($key==18 || $key==30)
            {
                //process the child array
                foreach($val as $key1=>$val1)
                {
                    //bind the expectation
                    $data[$key][$key1] =isset($this->array[$key1])?$this->get_array($key1):'';
                }
            }

        }

        //output
        print_r($data);
    }


    //function process the each array
    function get_array($index)
    {       
        //process the each array
        foreach($this->array[$index] as $key=>$value)
        {
            if(isset($this->array[$key]) && is_array($this->array[$key]))
            {
                foreach($this->array[$key] as $key1=>$value1)
                {
                    //
                    $this->data[$key] = isset($this->array[$key1])?$this->get_array($key1):'';
                }

            }else{

                $this->data[$key] = '';
            }
        }

        return $this->data;
    }


}


    $obj = new arrayTest();

    $obj->index();

Answer 2

2. 编辑：

我修改了我的迭代解决方案，以便检查文本格式的结果数组的总长度。如果长度没有改变，迭代将退出。

（修改）示例数据：

$a=array('18'=> array (  '1' =>'', '14' =>''),
                '20' => array ( '32' =>''),
                '23' => array ( '24' =>''), 
                '24' => array ( '25' =>'', '26' =>''),
                '26' => array ( '27' =>'', '28' =>''),
                '29' => array ( '33' =>''), 
                '30' => array ( '23' =>'', '31' =>''),
                '32' => array ( '30' =>''),
                '33' => array ( '32' =>'')
               );

代码：

function plough(&$a){ // ploughs throught the array once from top to bottom ...
 foreach ($a as $ak => &$av){
  foreach($av as $k => &$v) {
   if(isset($a[$k])) $v=$a[$k];
  }
 }
 return strlen(print_r($a,1)); // returns string-length of print_r-output
}

// iterate until there is no change in string-length any more ...
for ($al1=1+$al0=0 ;$al0<$al1; $al1=plough($a)) $al0=$al1;
print_r($a);

通过将&变量名称放在foreach循环中，您正在使用对这些变量的引用，而不是使用复制的值。将例程应用于我的（修改后的）示例会导致以下结果

输出：

Array
(
    [18] => Array
        (
            [1] => 
            [14] => 
        )

    [20] => Array
        (
            [32] => Array
                (
                    [30] => Array
                        (
                            [23] => Array
                                (
                                    [24] => Array
                                        (
                                            [25] => 
                                            [26] => Array
                                                (
                                                    [27] => 
                                                    [28] => 
                                                )

                                        )

                                )

                            [31] => 
                        )

                )

        )

    [23] => Array
        (
            [24] => Array
                (
                    [25] => 
                    [26] => Array
                        (
                            [27] => 
                            [28] => 
                        )

                )

        )

    [24] => Array
        (
            [25] => 
            [26] => Array
                (
                    [27] => 
                    [28] => 
                )

        )

    [26] => Array
        (
            [27] => 
            [28] => 
        )

    [29] => Array
        (
            [33] => Array
                (
                    [32] => Array
                        (
                            [30] => Array
                                (
                                    [23] => Array
                                        (
                                            [24] => Array
                                                (
                                                    [25] => 
                                                    [26] => Array
                                                        (
                                                            [27] => 
                                                            [28] => 
                                                        )

                                                )

                                        )

                                    [31] => 
                                )

                        )

                )

        )

    [30] => Array
        (
            [23] => Array
                (
                    [24] => Array
                        (
                            [25] => 
                            [26] => Array
                                (
                                    [27] => 
                                    [28] => 
                                )

                        )

                )

            [31] => 
        )

    [32] => Array
        (
            [30] => Array
                (
                    [23] => Array
                        (
                            [24] => Array
                                (
                                    [25] => 
                                    [26] => Array
                                        (
                                            [27] => 
                                            [28] => 
                                        )

                                )

                        )

                    [31] => 
                )

        )

    [33] => Array
        (
            [32] => Array
                (
                    [30] => Array
                        (
                            [23] => Array
                                (
                                    [24] => Array
                                        (
                                            [25] => 
                                            [26] => Array
                                                (
                                                    [27] => 
                                                    [28] => 
                                                )

                                        )

                                )

                            [31] => 
                        )

                )

        )

)