ต้องการแก้ไข query เพื่อไปทำโค้ตแบ่งหน้า แต่แก้ไม่เป็น งง กับ oop อ่ะครับ รบกวนด้วยครับ

<?php

class CReturn {
	const FAIL = false;
	const SUCCESS = true;
	public static function error($error_msg){
		return array(self::FAIL, $error_msg);
	}
	public static function success($value){
		return array(self::SUCCESS, $value);
	}
}

class initDb {
	private static $host = "localhost";
	private static $user = "root";
	private static $pass = "mysql";
	private static $db = "db_test1";	
	
	public static function connect(){
		$db_conn = mysql_pconnect(self::$host, self::$user, self::$pass) or die(mysql_error());
		mysql_select_db(self::$db, $db_conn) or die(mysql_error());
		mysql_query("SET NAMES UTF8;");
		return $db_conn;
	}
}

class DbAbstract {
	protected $db_conn;
	protected $table_name;
        protected $jointable_name
	public $_data;
	public function __construct($db_conn){
		$this->db_conn = $db_conn;
	}
	protected function _get($sql){
		$this->_data = null;		
		$result = mysql_query($sql);
		if(mysql_errno($this->db_conn) !== 0) 
			return CReturn::error("Mysql error [".mysql_errno($this->db_conn)."] : ".$sql."<br />".mysql_error($this->db_conn));
		while($res = mysql_fetch_assoc($result)) {
			$this->_data[] = $res;
		}
		return CReturn::success(mysql_num_rows($result));
	}
	protected function getTableName(){
		return $this->table_name;
	}
        protected function getJoinTableName(){
		return $this->jointable_name;
	}
}
?>

class DbEmployee extends DbAbstract {
	protected $table_name = "t_employee";
	protected $jointable_name = "t_position";

	public function getEmployee(){ //ฟังก์ชั่นเช็คชื่อผู้ใช้
		return $this->_get("SELECT * FROM {$this->getTableName()} 
		LEFT JOIN {$this->getJoinTableName()} ON {$this->getTableName()}.position_id = {$this->getJoinTableName()}.position_id");
	}
	public function searchEmployee($value){ //ฟังก์ชั่นเช็คชื่อผู้ใช้
		return $this->_get("SELECT * FROM {$this->getTableName()} 
		LEFT JOIN {$this->getJoinTableName()} ON {$this->getTableName()}.position_id = {$this->getJoinTableName()}.position_id WHERE {$this->getTableName()}.emp_name LIKE '%$value%' OR {$this->getTableName()}.lastname LIKE '%$value%' OR {$this->getJoinTableName()}.position_name LIKE '%$value%'");
	}
	public function getEmployeeById($id){ //ฟังก์ชั่นเช็คชื่อผู้ใช้
		return $this->_get("SELECT * FROM {$this->getTableName()} WHERE emp_id ='$id'");
	}

}

<?php
$search = $_POST['keyword'];
if($search == ""){
$Tbemployees = new DbEmployee($db_conn);
list($result, $value) = $Tbemployees->getEmployee();
$num_rows = var_export($value,true); //เช็คจำนวนแถว
}else{
$Tbemployees = new DbEmployee($db_conn);
list($result, $value) = $Tbemployees->searchEmployee($search);
$num_rows = var_export($value,true); //เช็คจำนวนแถว
//print "<b>Query result</b> = ".var_export($result,true)."<br />";
//print "<b>Num rows/Error msg</b> = '".$value."'<br />";
//print "<b>data</b> = ".var_export($Tbemployees->_data,true)."<br />";
//print "<br />";
}
if($num_rows > 0){
$Per_Page = 10;   // Per Page
$Page = $_GET["Page"];
if(!$_GET["Page"])

{

$Page=1;

}
$Prev_Page = $Page-1;
$Next_Page = $Page+1;
 
$Page_Start = (($Per_Page*$Page)-$Per_Page);
if($num_rows<=$Per_Page)
{
$Num_Pages =1;
}
else if(($num_rows % $Per_Page)==0)
{
$Num_Pages =($num_rows/$Per_Page) ;
}
else

{
$Num_Pages =($num_rows/$Per_Page)+1;
$Num_Pages = (int)$Num_Pages;
}
$strSQL .=" order  by employee_id ASC LIMIT $Page_Start , $Per_Page";  // ตรงนี้อ่ะครับที่ผมงง ผมจะแก้ไข queryที่ผมได้สร้าง จาก classemployee.php
$objQuery  = mysql_query($strSQL); // ตรงนี้ก็ด้วยครับ
foreach($Tbemployees->_data as $city => $detail)
{
    print "<tr>";
        print "<td>&nbsp;$detail[emp_id]</td>";
		print "<td>&nbsp;$detail[emp_name]</td>";
		print "<td>&nbsp;$detail[lastname]</td>";
		print "<td>&nbsp;$detail[position_name]</td>";
		print "<td>&nbsp;$detail[emp_phone]</td>";
		print "<td>&nbsp;$detail[email]</td>";
		print "<td><a href=\"formeditemployee.php?emp_id=$detail[emp_id]\"><img src=\"../images/onebit_20.png\" width=\"24\" height=\"24\"></a></td>";
		print "<td><a href=\"deleteemployee.php?emp_id=$detail[emp_id]\"><img src=\"../images/onebit_35.png\" width=\"24\" height=\"24\"></a></td>";
     print "</tr>";
} 
}
?>
    </tbody>
	<thead>
		<tr height:"2%">
        	<td></td>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
        </tr>
		</thead>
</table>
  <br class="spacer" />
  </div>
<?php
 initDb::Close();
?>