foreach关联数组无法访问索引不正确

Question

foreach($ev as $evn)
{
    $events[]=array(
    "event"=>$evn['EVTID']  
    );


}

输出：

Array ( [0] => Array ( [event] => 3 ) [1] => Array ( [event] => 2 ) )

我可以访问3和2值