在加入同一阵列中两个对之间的键/值对 [英] Add key/value pair in between two pairs in an array

问题描述

我一直在寻找和思考，但不能拿出一个可行的解决这个问题。

I have been looking and thinking, but can't come up with a viable solution to this problem.

我有序贯数字键数组

的例如：的

Array
 (
    [0] => value 0
    [1] => value 1
    [2] => value 2
    [3] => value 3
)

我要在我的数组添加一个新的键/值对两个特定键之间。

I need to add a new key/value pair in between two specific keys in my array.

的例如：的

我需要添加 [A] =＆GT;值键之间的 1 和 2 像

I need to add [a] => value a between keys 1 and 2 like

Array
 (
    [0] => value 0
    [1] => value 1
    [a] => value a
    [2] => value 2
    [3] => value 3
)

我已经这样做，虽然，但周围似乎很长的路要走。

What I already though of doing, but seems the long way around

• 我切片阵列中的两个，我的键/值对添加到片之一的背部和重组我的2片成一个单一的阵列

• slicing my array in two, add my key/value pair to the back of slice one, and recombine my 2 slices into a single array

一个莫名其妙地推进每个按键后按键 1 修改我的新的键/值对 [2] =＆GT;值时，将它添加到阵列的背面，然后再打我的数组

somehow advancing each key by one after key 1 modifying my new key/value pair to [2] => value a, the add it to the back of the array, and then resort my array

要快速清洁的方式任何建议，以实现这一目标。

Any suggestions to a quick clean way to achieve this

推荐答案

不知道为什么你会做...

Dont know why you will do it ...

    $array = array(0=>0,1=>1,2=>2,3=>3);

    $add = array('a'=>'a');

    $before_key = 2;

    $new_array = array();

    foreach($array as $key=>$val) {
        if($key===$before_key) {
            $new_array[key($add)] = $add[key($add)];
        }
        $new_array[$key] = $val;
    }
    $array = $new_array;
    var_dump($array);

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