php - 减少多维数组的维度

Question

我在遍历这一系列产品信息时遇到了麻烦，并且需要为每个项目回显谷歌电子商务跟踪代码的预期结果。如何将维度减少一。简而言之 -

这个怎么转：

Array (
    [array] => Array (
        [0] => Array (
            [product_id] => 7
            [prod_count] => 1
            [price] => 19.99
        )
        [1] => Array (
            [product_id] => 6
            [prod_count] => 3
            [price] => 19.99
        )
        [2] => Array (
            [product_id] => 5
            [prod_count] => 2
            [price] => 19.99
        )
        [3] => Array (
            [product_id] => 4
            [prod_count] => 4
            [price] => 14.99
        )
        [4] => Array (
            [product_id] => 3
            [prod_count] => 5
            [price] => 19.99
        )
    )
 )

进入这个：

 Array (
            [0] => Array (
                [product_id] => 7
                [prod_count] => 1
                [price] => 19.99
            )
            [1] => Array (
                [product_id] => 6
                [prod_count] => 3
                [price] => 19.99
            )
            [2] => Array (
                [product_id] => 5
                [prod_count] => 2
                [price] => 19.99
            )
            [3] => Array (
                [product_id] => 4
                [prod_count] => 4
                [price] => 14.99
            )
            [4] => Array (
                [product_id] => 3
                [prod_count] => 5
                [price] => 19.99
            )
        )

Answer 1

该示例的明显答案是：

$array = $array['array'];

但是，假设有多个数组作为第一级：

$array = call_user_func_array('array_merge',$array);

Answer 2

$arr = array(
   "withinArray" => array(
       "withinMoreArray" => array(
           "andEvenMoreArray" => array(
           )
       )
   )
);

$arr = current($arr);
// OR
$arr = $arr['withinArray'];

Answer 3

<?php
// Let's say this is your big array:
/*Array (
    [array] => Array (
        [0] => Array (
            [product_id] => 7
            [prod_count] => 1
            [price] => 19.99
        )
        [1] => Array (
            [product_id] => 6
            [prod_count] => 3
            [price] => 19.99
        )
        [2] => Array (
            [product_id] => 5
            [prod_count] => 2
            [price] => 19.99
        )
        [3] => Array (
            [product_id] => 4
            [prod_count] => 4
            [price] => 14.99
        )
        [4] => Array (
            [product_id] => 3
            [prod_count] => 5
            [price] => 19.99
        )
    )
 )*/

$littlearray = $bigarray['array'];
?>