显示信息API

Question

我会知道如何在emcRef上显示元素，状态为... 它写一个数组，但是如果我做这个var_dump(is_array($result_order_status)); 返回错误的

error : Warning: Illegal string offset 'emcRef'

谢谢 我有这个结果

    $result_order_status = $this->Boxtale->getStatus('19022xxxxxxxONR04A0FR');


var_dump($result_order_status);

string(533) "API OrderStatus :
Array
(
    [emcRef] => 19022xxxxxxxONR04A0FR
    [state] => Commande validée par le transporteur
    [opeRef] => 6becf38c-0ce6-xxxx-a59b-9e97729ab478
    [labelAvailable] => 1
    [labelUrl] => http://test.envoimoinscher.com/documents?type=bordereau&envoi=19022xxxxxxxONR04A0FR
    [labels] => Array
        (
            [0] => http://test.envoimoinscher.com/bordereaux/nBqtCEHx2UoYGnnjiXwNJcM1VVYiWgrf/1902268440MONR04A0FR_bordereau_1.pdf
        )

    [documents] => Array
        (
        )

)