获取json数组某个值

dump($this->object_array(json_encode($user_certify_list['certificates'])));

$user_certify_list['certificates_photo']=json_decode($user_certify_list['certificates'])->photo;

 $user_certify_list['certificates_remark']=json_decode($user_certify_list['certificates'])->remark;

获取json数组的photo值