สอบถามเรื่องแบ่งหน้า เลข no. แถวไม่นับต่อเนื่อง หน้าแรกนับได้ปกติแต่หน้าต่อ ๆ ไป มัน *2 ครับ

<form name="frmMain1" action="" method="POST">
<?php
$start = $_GET["start"];
$end = $_GET["end"];

$search = $db->prepare("SELECT
tbl_logs.start,
tbl_material.call_on,
tbl_material.title,
tbl_machine.mName
FROM
tbl_logs
INNER JOIN tbl_material ON tbl_material.logs_id = tbl_logs.Id
INNER JOIN tbl_machine ON tbl_logs.machine_id = tbl_machine.id
WHERE DATE(tbl_logs.start) BETWEEN :start AND :end ");

$search->bindParam(':start',$start,PDO::PARAM_INT);
$search->bindParam(':end',$end,PDO::PARAM_INT);
// $search->bindParam(':d',$d);
$search->execute();
$Num_Rows = $search->rowCount();

$Per_Page = 50;   // 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;
}

$search1 = $db->prepare("SELECT
tbl_logs.start,
tbl_material.call_on,
tbl_material.title,
tbl_machine.mName
FROM
tbl_logs
INNER JOIN tbl_material ON tbl_material.logs_id = tbl_logs.Id
INNER JOIN tbl_machine ON tbl_logs.machine_id = tbl_machine.id
WHERE DATE(tbl_logs.start) BETWEEN :start AND :end
ORDER BY start DESC 
LIMIT :Page_Start , :Per_Page");
//WHERE YEAR(tbl_logs.start) = :y AND DAY(tbl_logs.start) = :d AND MONTH(tbl_logs.start) = :m

$search1->bindParam(':start',$start,PDO::PARAM_INT);
$search1->bindParam(':end',$end,PDO::PARAM_INT);
// $search1->bindParam(':m',$m,PDO::PARAM_INT);
$search1->bindParam(':Page_Start',$Page_Start,PDO::PARAM_INT);
$search1->bindParam(':Per_Page',$Per_Page,PDO::PARAM_INT);
$search1->execute();
?>

		<div class="col-md-6 col-md-offset-1 form-inline">
        <div class="input-group">
          <input type="text" class="input-sm form-control" name="start" id="start" value="<?php if(isset($_GET['start'])) { echo $_GET['start']; }?>" placeholder="click to show datepicker"/>
            <span class="input-group-addon">ถึง</span>
          <input type="text" class="input-sm form-control" name="end" id="end" value="<?php if(isset($_GET['end'])) { echo $_GET['end']; }?>" placeholder="click to show datepicker"/>
       </div>
       		<input type="button" name="OK" value="OK" class="btn btn-primary btn-sm" OnClick="javascript:window.location='?start='+document.frmMain1.start.value+'&end='+document.frmMain1.end.value;">
		</div>

       <div class="col-md-2 col-md-offset-2">
            <input type="text" id="search" placeholder="Search..." class="form-control input-sm" />
       </div>
    

       <div class="col-md-4 col-md-offset-1 form-inline" style="padding-top:20px">
       	  Total <?=$Num_Rows;?> Record : <?=$Num_Pages;?> Page :
          <select name="ddlPage" class="form-control input-sm">
            <?php
              for($i=1; $i<=$Num_Pages; $i++){
            ?>
              }
              <option value="<?=$i;?>" <?php if($Page==$i){echo "selected";}?>><?=$i;?></option>
            <?php
              }
            ?>
          </select>
                <input type="button" name="OK" value="OK" class="btn btn-primary btn-sm" OnClick="javascript:window.location='?Page='+document.frmMain1.ddlPage.value+'&start='+document.frmMain1.start.value+'&end='+document.frmMain1.end.value;">
       </div>
       	

        <div class="col-md-10 col-md-offset-1" style="padding-top:10px">
          <table class="table table-hover">
            <thead>
              <tr>
                <th style="text-align: center;">No.</th>
                <th style="text-align: center;">ชื่อเครื่อง</th>
                <th style="text-align: center;">รหัสสื่อ</th>
                <th style="text-align: center;">ชื่อเรื่อง</th>
                <th style="text-align: center;">ว/ด/ป (ยืม)</th>
              </tr>
            </thead>

            <tbody>
            <?php 
             $no = 0;
              if ($Page > 1)
              {
                $no = $Per_Page * $Page;
              }
              while ($row = $search1->fetch(PDO::FETCH_ASSOC)) 
                {
                  $no++;
            ?>
              <tr>
                <td style="width: 5%; text-align: center;"><?=$no;?></td>
                <td style="width: 13%"><?=$row['mName']; ?></td>
                <td style="width: 13%; text-align: center;"><?=$row['call_on']; ?></td>
                <td style="width: 25%"><?=$row['title']; ?></td>
                <td style="width: 10%"><?=$row['start']; ?></td>
              </tr>
              <?php } //while ?> 
            </tbody>
          </table>

          <br>
        </div>
</form>