这样的两个话语能否结合为一句

$get_rows = mysql_num_rows("select id from news where class_type='类别'");

if($get_rows){
  $get_list=mysql_fetch_array("select * from news where class_type='类别'");
  .......循环显示
}

$rs = mysql_query("select id from news where class_type='类别'");
if($get_rows = mysql_num_rows($rs)) {
  $get_list = mysql_fetch_array($rs);
  .......循环显示
}

$rs = mysql_query("select id from news where class_type='类别'");

$get_list = array();

while($row = mysql_fetch_array($rs) ){
    array_push($get_list, $row['id']);
}
$get_rows = count($get_list);