读取对象数组

Question

我有一个json一个对象数组，我想从中读取[message]我试着用foreach循环的帮助但是它给出了我的错误

  

未定义的属性：第56行的C：\ xampp \ htdocs \ fb \ select-action.php中的stdClass :: $ name

这是第56行

foreach($data->data as $obj)
  {
    echo   $obj->message.'<br>';
  }

包含对象json数组的$ data变量显示了这种类型的结果

stdClass Object
(
    [data] => Array
        (
            [0] => stdClass Object
                (
                    [comments] => stdClass Object
                        (
                            [data] => Array
                                (
                                    [0] => stdClass Object
                                        (
                                            [created_time] => 2017-09-19T09:17:24+0000
                                            [from] => stdClass Object
                                                (
                                                    [name] => Hasni_Collections786
                                                    [id] => 581985938822055
                                                )

                                            [message] => :-p ;)
                                            [id] => 737576403263007_737576629929651
                                        )

                                    [1] => stdClass Object
                                        (
                                            [created_time] => 2017-09-24T12:54:28+0000
                                            [from] => stdClass Object
                                                (
                                                    [name] => Hasni_Collections786
                                                    [id] => 581985938822055
                                                )

                                            [message] => :-p
                                            [id] => 737576403263007_740798849607429
                                        )

                                    [2] => stdClass Object
                                        (
                                            [created_time] => 2017-09-24T12:54:31+0000
                                            [from] => stdClass Object
                                                (
                                                    [name] => Hasni_Collections786
                                                    [id] => 581985938822055
                                                )

                                            [message] => :-p
                                            [id] => 737576403263007_740798896274091
                                        )

                                )

                            [paging] => stdClass Object
                                (
                                    [cursors] => stdClass Object
                                        (
                                            [before] => WTI5dGJXVnVkRjlqZAFhKemIzSTZAOek0zTlRjMk5qSTVPVEk1TmpVeE9qRTFNRFU0TVRJMk5EUT0ZD
                                            [after] => WTI5dGJXVnVkRjlqZAFhKemIzSTZAOelF3TnprNE9EazJNamMwTURreE9qRTFNRFl5TlRjMk56RT0ZD
                                        )

                                )

                        )

                    [id] => 581985938822055_737576403263007
                )

        )

    [paging] => stdClass Object
        (
            [cursors] => stdClass Object
                (
                    [before] => Q2c4U1pXNTBYM0YxWlhKNVgzTjBiM0o1WDJsa0R5UTFPREU1T0RVNU16ZAzRNakl3TlRVNkxUZAzNPRE0xTnpJNU9UQTVOekExTVRVNE56SVBER0ZA3YVY5emRHOXllVjlwWkE4ZAk5UZA3hPVGcxT1RNNE9ESXlNRFUxWHpjek56VTNOalF3TXpJMk16QXdOdzhFZAEdsdFpRWlp3T0I4QVE9PQZDZD
                    [after] => Q2c4U1pXNTBYM0YxWlhKNVgzTjBiM0o1WDJsa0R5UTFPREU1T0RVNU16ZAzRNakl3TlRVNkxUZAzNPRE0xTnpJNU9UQTVOekExTVRVNE56SVBER0ZA3YVY5emRHOXllVjlwWkE4ZAk5UZA3hPVGcxT1RNNE9ESXlNRFUxWHpjek56VTNOalF3TXpJMk16QXdOdzhFZAEdsdFpRWlp3T0I4QVE9PQZDZD
                )

        )

)

Answer 1

您的响应似乎是一个混合的Array / stdObject。如果您的给定输出来自$ data，那么您的foreach必须看起来像这样：

foreach ($data->data[0]->comments->data as $obj) {
    echo $obj->message.'<br>';
}

有没有json_decode（）？似乎某些部件被铸造成阵列或类似的东西。考虑使用json_decode（$ json，true），这会将整个结果作为一个数组给出，而不会出现这种奇怪的混淆。