如何用我选择的键和值（在php中）在另一个数组的每个元素前添加数组？

Question

此代码：

for ($p=0;$p<count($results);$p++){
    foreach ($results[$p] as $k => $v){
        $typeee = ['type' => strtolower(str_replace('_','',$results[$p][$k]['metric']))."container"];
        array_insert2($results[$p],0,$typeee);
    }
}
print_r($results);

给我这个：

Array (
    [0] => Array
        (
            [type] => pagestoriescontainer
            [0] => Array
                (
                    [type] => pagestories
                    [object_id] => 123456778
                    [metric] => page_stories
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 2090
                )

            [1] => Array
                (
                    [type] => pagestorytellers
                    [object_id] => 123456778
                    [metric] => page_storytellers
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 2041
                )


 [...]

[1] => Array
        (

            [0] => Array
                (
                    [type] => pagestories
                    [object_id] => 199193463123456778
                    [metric] => page_stories
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 0
                )

            [1] => Array
                (
                    [type] => pagestorytellers
                    [object_id] => 199193463123456778
                    [metric] => page_storytellers
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 0
                )

   [...]

但是这段代码：

for ($p=0;$p<count($results);$p++){
    foreach ($results[$p] as $k => $v){ 
        $typeee = ['type' => strtolower(str_replace('_','',$results[$p][$k]['metric']))."container"];
        array_insert2($results[$p],$k,$typeee);
    }
}

不要给我这个：

Array (
    [0] => Array
        (
            [type] => pagestoriescontainer
            [0] => Array
                (
                    [type] => pagestories
                    [object_id] => 123456778
                    [metric] => page_stories
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 2090
                )
            [type] => pagestorytellerscontainer
            [1] => Array
                (
                    [type] => pagestorytellers
                    [object_id] => 123456778
                    [metric] => page_storytellers
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 2041
                )


 [...]

[1] => Array
        (
            [type] => pagestoriescontainer
            [0] => Array
                (
                    [type] => pagestories
                    [object_id] => 199193463123456778
                    [metric] => page_stories
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 0
                )
            [type] => pagestorytellerscontainer
            [1] => Array
                (
                    [type] => pagestorytellers
                    [object_id] => 199193463123456778
                    [metric] => page_storytellers
                    [end_time] => 1386057600
                    [period] => 86400
                    [value] => 0
                )

   [...]

为什么？ 我如何得到想要的东西？ :)

也，

function array_insert2 (&$array, $position, $insert_array) {  
    $first_array = array_splice ($array, 0, $position);
    $array = array_merge ($first_array, $insert_array, $array);
}

Answer 1

array_insert2的第二个参数是位置。 在第一个代码中，实际上是给它一个整数，使其成为有效位置（$ p，与array_splice函数结合使用）。 在第二段代码中，提供给array_insert2的位置是$ results [$ p]上foreach循环中的键（$ k）。 给定的键不能与array_splice函数一起正确使用。 也许不提供$ k，而是在$ results [$ p]中给出$ k的array_search结果。

简短答案：第二段代码中提供的位置不是整数，因此不能用于array_splice函数。