单击后退按钮时如何修复确认表单重新提交？

时间：2015-05-18 04:20:51

标签： php html

我有一个名为selectrooms.php的页面。单击“添加”按钮，它将转到“getrooms.php”页面。当我在getrooms.php并单击后退按钮时，没有加载selectrooms.php页面。错误称为“确认表单重新提交”。怎么能防止这个错误？ 如果有人能帮助我解决这个问题，我将不胜感激。谢谢。

Selectrooms.php 

 <?php


   $con=mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('hotel') or die("Cannot select DB");




if(isset($_POST['submit'])) 

{


    $start = $_POST['checkin'];
    $end = $_POST['checkout'];
    $hotel_id = $_POST['hotel_id'];





$counter1 = mysql_query("SELECT * FROM rooms WHERE  hotel_id='".$hotel_id."' AND room_type = 'standard' ");
$num1 = mysql_num_rows($counter1);
echo 'Total Standard Rooms  : ' .("$num1");

echo '<br>';
$counter2 = mysql_query("SELECT * FROM rooms WHERE  hotel_id='".$hotel_id."' AND room_type = 'deluxe' ");
$num2 = mysql_num_rows($counter2);
echo 'Total Deluxe Rooms  : ' .("$num2");
echo '<br>';

$counter3 = mysql_query("SELECT * FROM rooms WHERE  hotel_id='".$hotel_id."' AND room_type = 'luxury suite' ");
$num3 = mysql_num_rows($counter3);
echo 'Total Luxury Suite  : ' .("$num3");

echo '<br>';
$counter4 = mysql_query("SELECT * FROM rooms WHERE  hotel_id='".$hotel_id."' AND room_type = 'family suite' ");
$num4 = mysql_num_rows($counter4);
echo 'Total Family Suite  : ' .("$num4");

echo '<br>';
$counter5 = mysql_query("SELECT * FROM rooms WHERE  hotel_id='".$hotel_id."' AND room_type = 'royal suite' ");
$num5 = mysql_num_rows($counter5);
echo 'Total Royal Suite  : ' .("$num5");

echo '<br>';

echo '<br>';

if($start < $end ){

$sql1 = mysql_query("select sum(qty) from reservations where start >= '".$start."' and end <= '".$end."' and  hotel_id='".$hotel_id."'and room_type = 'standard' ");
$row1 = mysql_fetch_array($sql1);
$x1 = $row1["sum(qty)"];

echo 'Tootal booked rooms in Standard  : ' . ("$x1");

echo '<br>';


$sql2 = mysql_query("select sum(qty) from reservations where start >= '".$start."' and end <= '".$end."' and  hotel_id='".$hotel_id."'and room_type = 'deluxe' ");
$row2 = mysql_fetch_array($sql2);
$x2 = $row2["sum(qty)"];

echo 'Tootal booked rooms in Deluxe  : ' . ("$x2");

echo '<br>';

$sql3 = mysql_query("select sum(qty) from reservations where start >= '".$start."' and end <= '".$end."' and  hotel_id='".$hotel_id."'and room_type = 'luxury suite' ");
$row3 = mysql_fetch_array($sql3);
$x3 = $row3["sum(qty)"];

echo 'Tootal booked rooms in Luxury Suite  : ' . ("$x3");

echo '<br>';

$sql4 = mysql_query("select sum(qty) from reservations where start >= '".$start."' and end <= '".$end."' and  hotel_id='".$hotel_id."'and room_type = 'family suite' ");
$row4 = mysql_fetch_array($sql4);
$x4 = $row4["sum(qty)"];

echo 'Tootal booked rooms in Family Suite  : ' . ("$x4");

echo '<br>';

$sql5 = mysql_query("select sum(qty) from reservations where start >= '".$start."' and end <= '".$end."' and  hotel_id='".$hotel_id."'and room_type = 'royal suite' ");
$row5 = mysql_fetch_array($sql5);
$x5 = $row5["sum(qty)"];

echo 'Tootal booked rooms in Royal Suite  : ' . ("$x5");

echo '<br>';
echo '<br>';



    $a1 = $num1 - $x1;
    echo 'Available rooms in Standard  : ' . ("$a1"); echo '<br>';

    $a2 = $num2 - $x2;
    echo 'Available rooms in Deluxe  : ' . ("$a2"); echo '<br>';

    $a3 = $num3 - $x3;
    echo 'Available rooms in Luxury Suite  : ' . ("$a3"); echo '<br>';

    $a4 = $num4 - $x4;
    echo 'Available rooms in Family Suite  : ' . ("$a4"); echo '<br>';

    $a5 = $num5 - $x5;
    echo 'Available rooms in Royal Suite  : ' . ("$a5"); echo '<br>';



    session_start();



  $_SESSION['hotelid'] = $hotel_id;
  $_SESSION['checkin'] = $start;
  $_SESSION['checkout']= $end;






}

else
{
    echo $msg_to_user = 'wrong date values';

    }

echo '<br>';


}

    ?>


<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
</head>

<body>
<table width="408" height="209" border="0" align="center" >
    <form name="myForm" action="".php" method="POST"  >
      <tbody align="center" >
        <tr>
          <td height="36" colspan="2" align="center" bgcolor="#D0DFED"  ><strong> Make Online Reservations </strong></td>
        </tr>
        <tr>
          <td width="239" height="32" align="center" bgcolor="#D0DFED"><strong>Select a  Hotel:</strong></td>
          <td width="227" align="center" bgcolor="#D0DFED"><select name="hotel_id" id="select" >



             <option value="1"<?= $_POST['hotel_id'] == "1" ? ' selected="selected"' : ''?>>Benthota Beach Hotel</option> 
    <option value="2"<?=$_POST['hotel_id'] == "2" ? ' selected="selected"' : ''?>>Serandib</option>
    <option value="3"<?= $_POST['hotel_id'] == "3" ? ' selected="selected"' : ''?>>Yala Safari Village</option> 
    <option value="4"<?=$_POST['hotel_id'] == "4" ? ' selected="selected"' : ''?>>Heritance Sigiriya</option>
    <option value="5"<?=$_POST['hotel_id'] == "5" ? ' selected="selected"' : ''?>>Negambo Beach Hotel</option>





          </select></td>
        </tr>
        <tr >
          <td height="31" align="center" scope="row" bgcolor="#D0DFED"><strong>Check in Date:</strong></td>
          <td align="center" bgcolor="#D0DFED"><input type="date" name="checkin" value="<?php echo $start; ?>" /></td>
        </tr>
        <tr>
          <td height="28" scope="row" align="center" bgcolor="#D0DFED"><strong> Check out date :</strong></td>
          <td align="center" bgcolor="#D0DFED"><input type="date" name="checkout" value="<?php echo $end; ?>"  /></td>
        </tr>
        <tr>
          <td height="35" scope="row" bgcolor="#D0DFED">&nbsp;</td>
          <td align="center" bgcolor="#D0DFED"><input type="submit" name="submit" value="check"></td>
        </tr>
      <td bgcolor="#D0DFED"> </td>
      <td bgcolor="#D0DFED"></td>
        </tbody>

    </form>
  </table>
<div style="width:1200px; height:100px; class= "2" id="2">
  <p>&nbsp;</p>
  <p>&nbsp;</p>
  <p>&nbsp;</p>

  <p>&nbsp;</p>
  <div id="apDiv3">
    <p>&nbsp;</p>
    <p>&nbsp;</p>
    <p>&nbsp;</p>
          <p>&nbsp;</p>
          <p>&nbsp;</p>
          <p>&nbsp;</p>
          <div id="apDiv4"></div>

  </div>
  </div>

<div class="1" id="1" >
  <div style="width:1200px; height:250px; class= "2" id="2">
  <h2 align="center">Standered Room Type</h2>
  <table width="876" height="188" border="1" align= "center"> 
  <form name="myForm" action="select_rooms2.php" method="POST"  >
    <tbody>
    <tr>
      <th width="278" rowspan="5" scope="row"><img src="photos/Single.jpg" width="248" height="172" alt=""/></th>
      <th width="278" scope="row">Room Type</th>
      <td width="146"><input type="hidden" value="standard" name="rtype">Standard <?php echo'<input type="hidden" name="myVariable" value="'.($a1).'">'; ?></td>
      <td width="146" rowspan="5" align="center"><input type="submit" name="Submit" value="Book Now" id="button1"/>
</td>
    </tr>
    <tr>
      <th scope="row">Available Rooms</th>
      <td ><?php  echo  '<span style="color:red;">' . $a1 . '</span>';  ?></td>
      </tr>
    <tr>
      <th scope="row">Max Adult</th>
      <td>1</td>
      </tr>
    <tr>
      <th scope="row">Max Child</th>
      <td>2</td>
      </tr>
    <tr>
      <th height="63" scope="row">Room Description</th>
      <td>&nbsp;</td>
      </tr>
  </tbody>
  </form>
</table>
  </div>


  <div style="width:1200px; height:250px; class= "3" id="3">
  <h2 align="center" > Deluxe Room Type </h2>
  <table width="876" height="188" border="1" align= "center"> 
    <form name="myForm1" action="select_rooms2.php" method="POST"  >

    <tbody>
    <tr>
      <th width="278" rowspan="5" scope="row"><img src="photos/4.JPG" width="248" height="172" alt=""/></th>
      <th width="278" scope="row">Room Type</th>
      <td width="146"><input type="hidden" value="deluxe" name="rtype">Deluxe<?php echo'<input type="hidden" name="myVariable" value="'.($a2).'">'; ?></td>
      <td width="146" rowspan="5" align="center"><input type="submit" name="Submit" value="Book Now" id="button1"/>
</td>
    </tr>
    <tr>
      <th scope="row">Available Rooms</th>
      <td ><?php  echo  '<span style="color:red;">' . $a2 . '</span>';  ?></td>
      </tr>
    <tr>
      <th scope="row">Max Adult</th>
      <td>1</td>
      </tr>
    <tr>
      <th scope="row">Max Child</th>
      <td>2</td>
      </tr>
    <tr>
      <th height="63" scope="row">Room Description</th>
      <td>&nbsp;</td>
      </tr>
  </tbody>
  </form>
</table>

  </div>



  <div style="width:1200px; height:250px; class= "4" id="4">
  <h2 align="center">Luxury Room Type </h2> 
  <table width="876" height="188" border="1" align= "center"> 
      <form name="myForm2" action="select_rooms2.php" method="POST"  >

    <tbody>
    <tr>
      <th width="278" rowspan="5" scope="row"><img src="photos/superior.jpg" width="241" height="153" alt=""/></th>
      <th width="278" scope="row">Room Type</th>
      <td width="146"><input type="hidden" value="luxury suite" name="rtype">Luxury Suite<?php echo'<input type="hidden" name="myVariable" value="'.($a3).'">'; ?></td>
      <td width="146" rowspan="5" align="center"><input type="submit" name="Submit" value="Book Now" id="button1"/>
</td>
    </tr>
    <tr>
      <th scope="row">Available Rooms</th>
      <td ><?php  echo  '<span style="color:red;">' . $a3 . '</span>';  ?></td>
      </tr>
    <tr>
      <th scope="row">Max Adult</th>
      <td>1</td>
      </tr>
    <tr>
      <th scope="row">Max Child</th>
      <td>2</td>
      </tr>
    <tr>
      <th height="63" scope="row">Room Description</th>
      <td>&nbsp;</td>
      </tr>
  </tbody>
  </form>
</table>

  </div>


  <div style="width:1200px; height:250px; class= "5" id="5">
<h2 align="center"> Family Suite Room Type </h2>
<table width="876" height="188" border="1" align= "center"> 
       <form name="myForm3" action="select_rooms2.php" method="POST"  >


    <tbody>
    <tr>
      <th width="278" rowspan="5" scope="row"><img src="photos/4.JPG" width="241" height="153" alt=""/></th>
      <th width="278" scope="row">Room Type</th>
      <td width="146"><input type="hidden" value="family suite" name="rtype">Family Suite<?php echo'<input type="hidden" name="myVariable" value="'.($a4).'">'; ?></td>
      <td width="146" rowspan="5" align="center"><input type="submit" name="Submit" value="Book Now" id="button1"/>
</td>
    </tr>
    <tr>
      <th scope="row">Available Rooms</th>
      <td ><?php  echo  '<span style="color:red;">' . $a4 . '</span>';  ?></td>
      </tr>
    <tr>
      <th scope="row">Max Adult</th>
      <td>1</td>
      </tr>
    <tr>
      <th scope="row">Max Child</th>
      <td>2</td>
      </tr>
    <tr>
      <th height="63" scope="row">Room Description</th>
      <td>&nbsp;</td>
      </tr>
  </tbody>
  </form>
</table>

  </div>



  <div style="width:1200px; height:250px; class= "3" id="3">
  <h2 align="center">Royal Suite Room Type</h2>
  <table width="876" height="188" border="1" align= "center"> 
        <form name="myForm4" action="select_rooms2.php" method="POST"  >

    <tbody>
    <tr>
      <th width="278" rowspan="5" scope="row"><img src="photos/1.JPG" width="241" height="153" alt=""/></th>
      <th width="278" scope="row">Room Type</th>
      <td width="146"><input type="hidden" value="royal suite" name="rtype">Royal Suite<?php echo'<input type="hidden" name="myVariable" value="'.($a5).'">'; ?></td>
      <td width="146" rowspan="5" align="center"><input type="submit" name="Submit" value="Book Now" id="button1"/>
</td>
    </tr>
    <tr>
      <th scope="row">Available Rooms</th>
 <td ><?php  echo  '<span style="color:red;">' . $a5 . '</span>';  ?></td>      </tr>
    <tr>
      <th scope="row">Max Adult</th>
      <td>1</td>
      </tr>
    <tr>
      <th scope="row">Max Child</th>
      <td>2</td>
      </tr>
    <tr>
      <th height="63" scope="row">Room Description</th>
      <td>&nbsp;</td>
      </tr>
  </tbody>
  </form>
</table>

  </div>

</div>




</body>
</html>

2 个答案:

答案 0 :(得分：1)

只需在页面开头添加这两行php代码：

<?php
header("Cache-Control: no cache");
session_cache_limiter("private_no_expire");
?>

答案 1 :(得分：-1)

您可以使用以下两种方式重定向页面： 1.使用PHP 

header('location:selectrooms.php');

  1. 使用JavaScript 

    onclick="window.history.go(-1); return false;"
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