循环数组包含3个类

Question

我无法理解如何遍历stdClasses。

打印阵列给出了以下内容：

Array
(
    [piggyback] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 1003
                    [entity_id] => 0
                    [redirect_url] => http://yahoo.com
                    [type] => Image
                )

        )

    [total_count] => 1
)
Array
(
    [piggyback] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 1002
                    [entity_id] => 0
                    [redirect_url] => http://google.com
                    [type] => Image
                )

        )

    [total_count] => 1
)
Array
(
    [piggyback] => Array
        (
            [0] => stdClass Object
                (
                    [id] => 1001
                    [entity_id] => 0
                    [redirect_url] => http://bing.com
                    [type] => Image
                )

        )

    [total_count] => 1

我试图循环使用以下内容并打印出一个值（id），但我一无所获。

foreach ($piggies_array as $key => $value) {
  echo $piggies_array[$key]['id'];
}

Answer 1

foreach ($piggies_array as $key => $value) {
if (is_array($value)){
  echo $value[0]->id;
 }
}

Answer 2

我认为你需要：

for ($i = 0; $i < count($piggies_array); $i++) {
    echo $piggies_array[$i]['piggyback'][0]->id;
}

...假设我们只能看到你输出的一部分;）

Answer 3

尝试将其替换为echo $value->id;