how to separate the individual value from userinfo object

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what i am trying to separate the particular value in the object sample code
$oUser = UserInfo::getByEmail($em);
            echo "<pre>";
            print_r($oUser);
            foreach($oUser as $key=>$value){
               echo $value['uNumLogin'];
            }


print_r result id is an array result
echo $value['uNumLogin'] result is - 110-1 like that i dnt know what value that?
i want uNumLogins result....
here with i attach output pfa and suggest me how to achieve this?

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