在if语句中增加数组项，数组变成2个了？

$playerids=array();

代码略……

if(!empty($arrids)){
                        foreach($arrids as $id){
                            array_push($playerids,$id);
                        }
                        
                    }
                    
                    if(!empty($arrnames)){
                        foreach($arrnames as $name){
                            $dataids=$this->User_model->sel_id_name($name);
                            if($dataids)
                                array_push($playerids,$dataids['playerid']);
                        }
                    }

Array
(
    [0] => 242000
    [1] => 140001
    [2] => 140001
)
Array
(
    [0] => 242000
    [1] => 140001
)