php กับ mysql ขอถามเรื่องการดึงข้อมูลที่ไม่ว่างออกมาจากตารางครับผม

 <? 
  $people_sql = "SELECT * FROM tb_people order by id_people DESC";
	$people_Query = mysql_query($people_sql); 
		
	$i_people = 0;
	$i_people_loop = 3;
	while($i_people < $i_people_loop){
	$people_objResult = mysql_fetch_array($people_Query);
	$people_pic_thumb = $people_objResult['people_pic_thumb'];
	$id_people = $people_objResult['id_people'];
	
	if($lang=="th"){
	$title_people = $people_objResult['title_people_th'];
	$detail_people = $people_objResult['detail_people_th'];
	}
	if($lang=="jp"){
	$title_people = $people_objResult['title_people_jp'];
	$detail_people = $people_objResult['detail_people_jp'];
	}
	$msgdetail_2 =  strip_tags($detail_people);
	$detialcrop_2 = cutStr($msgdetail_2,'100','...');
	if(!$people_pic_thumb){ $people_pic_thumb="no_img2.gif"; }
	 ?>
     <? if(($lang=="th")&&($people_objResult['title_people_th'])) { ?>
<li><a href='?fo=people&pid=<?=$id_people;?>'><img src="images_people/people_thumb/<?=$people_pic_thumb;?>" width="185" border="0" /></a>
  <h2><?=$title_people;?>
  </h2><?=$detialcrop_2;?> <a href='?fo=people&pid=<?=$id_people;?>'>อ่านต่อ</a></li>
<? $i_people++; }?>

     <? if(($lang=="jp")&&($people_objResult['title_people_jp'])) { ?>
<li><a href='?fo=people&pid=<?=$id_people;?>'><img src="images_people/people_thumb/<?=$people_pic_thumb;?>" width="185" border="0" /></a>
  <h2><?=$title_people;?>
  </h2><?=$detialcrop_2;?> <a href='?fo=people&pid=<?=$id_people;?>'>อ่านต่อ</a></li>
<? $i_people++; }?>

 <?  } ?>