php里面怎么把数组里面的二维数组转化成obj类型的呢？

想把useridinfo这个数组转化成obj类型的怎么做呢？
试了下new ArrayObject($arr[$key])结果把整个都转化了，求大神帮忙。

回复讨论(解决方案)

$a = array(  array(    'userIdInfo' => array( 'uid' => '100000113', 'type' => 'ZXIN_IDTYPE::IDNA' ),    'chgCreditValue' => 50  ),  array(    'userIdInfo' => array( 'uid' => '10000110', 'type' => 'ZXIN_IDTYPE::IDNA' ),    'chgCreditValue' => 150  ),);foreach($a as &$v)  settype($v, 'object');print_r($a);

Array(    [0] => stdClass Object        (            [userIdInfo] => Array                (                    [uid] => 100000113                    [type] => ZXIN_IDTYPE::IDNA                )            [chgCreditValue] => 50        )    [1] => stdClass Object        (            [userIdInfo] => Array                (                    [uid] => 10000110                    [type] => ZXIN_IDTYPE::IDNA                )            [chgCreditValue] => 150        ))

谢谢版主大人，已经解决了。