PHP数组排序多维

Question

我有一个这样结构的数组（这是 CSV 格式化它的方式）：

Array(

    0 => Array(
        0 => person1
        1 => person2
        2 => person3
        //all the way to 9
    ),

    1 => Array(
        0 => id belonging to person 1
        1 => id belonging to person 2
        2 => id belonging to person 3
    ),

    2 => Array(
        0 => id belonging to person 1
        1 => id belonging to person 2
        2 => id belonging to person 3
    ),

    //all the way to 20
)

我正在尝试对一个新数组（数组）进行排序，每个索引都是与上面0 索引中的键对应的值。即，person1 指向一个数组，其中所有 id 都来自外部数组 1-20。

在索引0之后的每个数组中，都包含20个id，0属于第一个数组中的key 0。

我试图实现的结构如下所示：

Array(
    [person1] => Array(
        id belonging to person 1
        id belonging to person 1
        id belonging to person 1
    ),

    [person2] => Array(
        id belonging to person 2
        id belonging to person 2
        id belonging to person 2
    ),

    [person3] => Array(
        id belonging to person 3
        id belonging to person 3
        id belonging to person 3
    ),
)

到目前为止，我的尝试已经奏效，但是，我不得不对一些索引进行硬编码。实现所需结构的最佳解决方案是什么？

Answer 1

我有点不确定这是否是你要找的……

<?php

$arr = Array(

    0 => Array(
        0 => "person1",
        1 => "person2",
        2 => "person3"
        //all the way to 9
    ),

    1 => Array(
        0 => "id belonging to person 1",
        1 => "id belonging to person 2",
        2 => "id belonging to person 3"
    ),

    2 => Array(
        0 => "id belonging to person 1",
        1 => "id belonging to person 2",
        2 => "id belonging to person 3"
    )
);

foreach($arr[0] AS $id=>$name)
{
    $ids[$id] = $name;
}

foreach(array_slice($arr,1) AS $persons)
{
    foreach($persons AS $id=>$person)
    {
        // make sure to check if $ids[$id] exist and handle it as you like.
        // if(isset($ids[$id]))
        $people[$ids[$id]][] = $person;
    }
}


print_r($people);

?>

结果：

Array
(
    [person1] => Array
        (
            [0] => id belonging to person 1
            [1] => id belonging to person 1
        )

    [person2] => Array
        (
            [0] => id belonging to person 2
            [1] => id belonging to person 2
        )

    [person3] => Array
        (
            [0] => id belonging to person 3
            [1] => id belonging to person 3
        )

)

编辑：应该注意的是，我没有检查此人的 id 是否存在于 $ids 数组中，也没有检查是否设置过 $people。