如何将下一个数组值放入当前键数组中

what is the best way to create an array (with unordered indexes) using next index value into the current index. i tried to use next() but didn't help. what i mean is:

使用当前索引中的下一个索引值创建数组（使用无序索引）的最佳方法是什么。我试图使用next（）但没有帮助。我的意思是：

Array
(
    [0] => a
    [8] => b
    [2] => c
    [7] => d
    [9] => e
    [11] => f
)

so, i want this data as an array like bellow

所以，我希望这些数据像下面的数组一样

Array
(
    [0] => Array
    (
        [current] => a
        [next] => b
    )
    [8] => Array
    (
        [current] => b
        [next] => c
    )
    [2] => Array
    (
        [current] => c
        [next] => d
    )
    [7] => Array
    (
        [current] => d
        [next] => e
    )
    [9] => Array
    (
        [current] => e
        [next] => f
    )
    [11] => Array
    (
        [current] => f
        [next] => 
    )
)

what could be the fastest way to do that.

什么是最快的方式来做到这一点。

2 个解决方案

#1

UPDATE

UPDATE

For in unordered array

对于无序数组

$newarray = array();
$length = count($oldarray);
for($i = 0; $i < $length ; ++$i)
{
   $newarray[] = array('current'=>current($oldarray),'next'=>next($oldarray));
}

#2

Note: this solution actually works, as proven. It was downvoted for some obscure reason.

注意：这个解决方案确实有效，经过验证。由于一些不明原因，它被推翻了。

The simplest solution I can think is the one you've suggested on your own question, with a slight improvement (Working Demo)

我能想到的最简单的解决方案是你在自己的问题上提出的解决方案，略有改进（Working Demo）

<?php
// simulate the array
$arr = [0=>'a',8=>'b',2=>'c',7=>'d',9=>'e',11=>'f'];

// iterate it without messing with its internal pointer
for($i=0;$i<count($arr);$i++)
    $arr[key($arr)] = ["current" => current($arr), "next" => next($arr)];

// test it
echo '<pre>';
print_r($arr);

OUTPUT

OUTPUT

Array
(
    [0] => Array
        (
            [current] => a
            [next] => b
        )

    [8] => Array
        (
            [current] => b
            [next] => c
        )

    [2] => Array
        (
            [current] => c
            [next] => d
        )

    [7] => Array
        (
            [current] => d
            [next] => e
        )

    [9] => Array
        (
            [current] => e
            [next] => f
        )

    [11] => Array
        (
            [current] => f
            [next] => 
        )

)

Your goal with this question is the exact purpose of current(), next() and key() functions, so you just have to use them.

这个问题的目标是current（），next（）和key（）函数的确切目的，所以你只需要使用它们。

#1