感谢

https://blog.csdn.net/m0_38092942/article/details/81354184

比如对象如下

object(App\User)#265 (28) {
      ["attributes":protected]=>  array(47) {    ["d"]=>    int(0)    ["t"]=>    int(0)    ["enable"]=>    int(1)  }  ["original":protected]=>  array(47) {    ["d"]=>    int(0)    ["t"]=>    int(0)    ["enable"]=>    int(1)  }  ["rememberTokenName":protected]=>  string(14) "remember_token"  ["accessToken":protected]=>     //此为要获取的数据  object(Laravel\Passport\Token)#267 (26) {
        ["attributes":protected]=>    array(9) {      ["id"]=>      string(80) "b79367e0ae9e601714cea9c4dbe387a48f82e4b6a01ac53c71ed4c39a86db5991e30bab49b9c29cd"      ["user_id"]=>      int(146)      ["client_id"]=>      int(4)      ["name"]=>      NULL      ["scopes"]=>      string(2) "[]"      ["revoked"]=>      int(0)      ["created_at"]=>      string(19) "2018-08-02 10:01:19"      ["updated_at"]=>      string(19) "2018-08-02 10:01:19"      ["expires_at"]=>      string(19) "2018-08-17 10:01:19"    }    ["original":protected]=>    array(9) {      ["id"]=>      string(80) "b79367e0ae9e601714cea9c4dbe387a48f82e4b6a01ac53c71ed4c39a86db5991e30bab49b9c29cd"      ["user_id"]=>      int(146)      ["client_id"]=>      int(4)      ["name"]=>      NULL      ["scopes"]=>      string(2) "[]"      ["revoked"]=>      int(0)      ["created_at"]=>      string(19) "2018-08-02 10:01:19"      ["updated_at"]=>      string(19) "2018-08-02 10:01:19"      ["expires_at"]=>      string(19) "2018-08-17 10:01:19"    }  }}

转化为数据

$data = (array)$object

获取数据（重点在这里）

$data["\0*\0accessToken"]->id