获取子数组键php

我有一个数组：

Array
( 
[47] => Array
    (
        [name] => 3543 good
        [price] => 100.0000
        [image] => data/hp_1.jpg
        [discount] => 
        [stock_status] => 
        [weight_class] => kg
    )

[28] => Array
    (
        [name] => HTC Touch HD
        [price] => 100.0000
        [image] => data/htc_touch_hd_1.jpg
        [discount] => 
        [stock_status] => 
        [weight_class] => g
    )

[41] => Array
    (
        [name] => iMac
        [price] => 100.0000
        [image] => data/imac_1.jpg
        [discount] => 
        [stock_status] => 
        [weight_class] => kg
    )

[40] => Array
    (
        [name] => iPhone
        [price] => 101.0000
        [image] => data/iphone_1.jpg
        [discount] => 
        [stock_status] => 
        [weight_class] => kg
    )
)

我需要子数组键（47,28 等），因为它是我的产品 ID

我正在运行 foreach 循环来获取详细信息并分配给新数组，例如'name' => $result['name']但不知道如何定位产品 ID。

您可以将键分配给 foreach 循环中的变量：

foreach($array as $id => $result) {
    $item = array('name' => $result['name'], 'id' => $id);
}