php索引数组转成关联数组

foreach($revenue_data as $k3=>$v3){
    $temps[$v3['_id']['date']]= array(
        '_id'=>$v3['_id'],
        'total_miss'=>$v3['total_miss'],
        'total_win'=>$v3['total_win'],
        'total_bet'=>$v3['total_bet'],
        'total_tips'=>$v3['total_tips']
    );
}