PHPで配列内の2次元配列をobj型に変換するにはどうすればよいですか?

$a = array(  array(    'userIdInfo' => array( 'uid' => '100000113', 'type' => 'ZXIN_IDTYPE::IDNA' ),    'chgCreditValue' => 50  ),  array(    'userIdInfo' => array( 'uid' => '10000110', 'type' => 'ZXIN_IDTYPE::IDNA' ),    'chgCreditValue' => 150  ),);foreach($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        ))