php循环遍历对象数组并赋值变量

Question

我试图打印出sessionkey的值并分配给变量，但我对如何在php中执行此操作感到困惑。

stdClass Object
(
    [timeout] => 1800
    [lastname] => cloud
    [registered] => false
    [username] => admin
    [firstname] => admin
    [domainid] => d323388a-ab41-11e4-91c4-464e571bcea9
    [userid] => ff5705c6-ab41-11e4-91c4-464e571bcea9
    [type] => 1
    [sessionkey] => DPguBrSBFB7hcdNZAgAyMJIPm4c=
    [account] => admin
)

输出var_dump

object(stdClass)#5 (10) { ["timeout"]=> string(4) "1800" ["lastname"]=> string(5) "cloud" ["registered"]=> string(5) "false" ["username"]=> string(5) "admin" ["firstname"]=> string(5) "admin" ["domainid"]=> string(36) "d323388a-ab41-11e4-91c4-464e571bcea9" ["userid"]=> string(36) "ff5705c6-ab41-11e4-91c4-464e571bcea9" ["type"]=> string(1) "1" ["sessionkey"]=> string(28) "vzaQz+uVdL/NQQE7eRSimP6FIf4=" ["account"]=> string(5) "admin" }

这是我尝试过的，但它不起作用。

foreach ($vms as $key => $obj) {
    foreach (get_object_vars($obj) as $name => $value) {
        echo "Object mapped to $key has property $name => $value";
    }
}

但我会在日志中看到这一点。

PHP Notice:  Trying to get property of non-object in 

非常感谢您的帮助。