Limit:<select id="select1" name="select1" class="side" onChange="location = this.options[this.options.selectedIndex].value">
<option selected="selected" value="?limit=10">10</option>
<option value="?limit=20">20</option>
<option value="?limit=30">30</option>
<option value="?limit=40">40</option>
</select>
<?php 
@$limit =  (int)$_GET['limit'];
if($limit == NULL){
$limit=10;
}
// Örnek Sql Sorgusu
$sql = "SELECT * FROM table LIMIT 0,".mysql_real_escape_string($limit)."";
$query = mysql_query($sql);
while($row=mysql_fetch_assoc($query)){

echo $row['column name'];

}
?>