php - 如何组合多维数组的值和键？

Question

我有以下数组

array (
  1 => 
  array (
    't' => 
    array (
      0 => 't1',
      1 => 't2',
      2 => 't3',
    ),
    'c' => 
    array (
      0 => 'c1',
      1 => 'c2',
      2 => 'c3',
    ),
    'd' => 
    array (
      0 => 'd1',
      1 => 'd2',
      2 => 'd3',
    ),
  ),
  2 => 
  array (
    'j' => 
    array (
      0 => 'j1',
      1 => 'j2',
      2 => 'j3',
    ),
    'm' => 
    array (
      0 => 'm1',
      1 => 'm2',
      2 => 'm3',
    ),
    'n' => 
    array (
      0 => 'n1',
      1 => 'n2',
      2 => 'n3',
    ),
  ),
)

我需要的输出是

array(
   1=>array(
      't-j'=>array('t1-j1','t2-j2','t3-j3'),
      'c-m'=>array('c1-m1','c2-m2','c3-m3'),
      'd-n'=>array('d1-n1','d2-n2','d3-n3')
      )
);

我所做的就是

$i = 0;
$res = [];
foreach($arr[1] as $key => $value){
    foreach($arr[2] as $k => $v){
        $res[$key.'-'.$k][] = $value[$i].'-'.$v[$i];
    }
        $i++;
}

但这给了我这样的东西？

Array
(
    [t-j] => Array
        (
            [0] => t1-j1
        )

    [t-m] => Array
        (
            [0] => t1-m1
        )

    [t-n] => Array
        (
            [0] => t1-n1
        )

    [c-j] => Array
        (
            [0] => c2-j2
        )

    [c-m] => Array
        (
            [0] => c2-m2
        )

    [c-n] => Array
        (
            [0] => c2-n2
        )

    [d-j] => Array
        (
            [0] => d3-j3
        )

    [d-m] => Array
        (
            [0] => d3-m3
        )

    [d-n] => Array
        (
            [0] => d3-n3
        )

)

所以我在这里搜索了很多链接，并且至少尝试了大部分我可以做到的事情。但我无法充分利用它

Answer 1

这对我有用:

$array1 = $arr[1];
$array2 = $arr[2];

$result = combineArray($array1, $array2);

var_dump($result);

function combineArray($array1, $array2)
{
    $res = [];

    foreach ($array1 as $key => $value)
    {
        $otherArray = array_splice($array2, 0, 1 );
        $otherKey   = array_keys($otherArray)[0];

        $smallerResult = array();
        foreach ($value as $smallerKey => $smallerValue)
        {
            $smallerResult[] = $smallerValue . '-' . $otherArray[$otherKey][$smallerKey];
        }
        $res[$key . '-' . $otherKey] = $smallerResult;
    }

    return $res;
}

我得到的输出如下:

array(3) {
  't-j' =>
  array(3) {
    [0] =>
    string(5) "t1-j1"
    [1] =>
    string(5) "t2-j2"
    [2] =>
    string(5) "t3-j3"
  }
  'c-m' =>
  array(3) {
    [0] =>
    string(5) "c1-m1"
    [1] =>
    string(5) "c2-m2"
    [2] =>
    string(5) "c3-m3"
  }
  'd-n' =>
  array(3) {
    [0] =>
    string(5) "d1-n1"
    [1] =>
    string(5) "d2-n2"
    [2] =>
    string(5) "d3-n3"
  }
}