thinkphp sql查询范围大于等于和小于等于

if (!empty($param_data['begin_price']) && !empty($param_data['end_price'])) {
 $where['a.total_price']=array(array('egt',$param_data['begin_price']),array('elt',$param_data['end_price']),'and');
    $order = ['a.total_price'=>'asc'];
}