更新數據庫

Question

當我更改產品數量並進行更新時，會發送數據，但會丟失數據，並且update命令實際上將合計列設為0，（實際上，更新代碼工作正常，直到我編輯了表單頁面以包括合計在底部，下面是屏幕截圖和更新代碼

表格腳本

    <?php require_once("include/session.php");?>
<?php require_once("include/dataconnect.php");?>
<?php require_once("include/functions.php");?>
<?php include("include/basicheader.php");?>
<div class="y-acc-contain">
<div class="page-top">
<table width="100% class="y-acc-pagehead">
<tbody>
<tr>
<td>
<h1>
"Your account"<?php echo $_SESSION['username'];?>
</h1>
</td>
</tr>
</tbody>
</table>
</div>
<div class="column-holder">
<div class="primary">
<div class="action-box rounded">
<div class="titlebar">
<h2>Order Form</h2>
</div>
<div class="listbar">
<div>
<?php
$submit = $_POST['Add'];

//form data
$Sname = mysql_real_escape_string(htmlentities(strip_tags($_POST['Sname'])));
$Pname = mysql_real_escape_string(htmlentities(strip_tags($_POST['Pname'])));
$Pidno = mysql_real_escape_string(htmlentities(strip_tags($_POST['Pidno'])));
$Psize = mysql_real_escape_string(htmlentities(strip_tags($_POST['Psize'])));
$Pcolour = mysql_real_escape_string(htmlentities(strip_tags($_POST['Pcolour'])));
$Pquantity = $_POST['Pquantity'];
$Weblink = mysql_real_escape_string(htmlentities(strip_tags($_POST['Weblink'])));
$Price = mysql_real_escape_string(htmlentities(strip_tags($_POST['Price'])));
$date = date("Y-m-d");


if('POST' === $_SERVER['REQUEST_METHOD']) 

{
if ($Sname&&$Pname&&$Pidno&&$Weblink&&$Price)
{
if (is_numeric($Price))
{
    $repeatheck = mysql_query("SELECT * FROM repplac WHERE Uname = '{$_SESSION['username']}' AND Pidno ='$Pidno' AND Sname='$Sname'");
    $count = mysql_num_rows($repeatheck);
if($count!=0)
{
    die ('PRODUCT ALREADY IN BASKET YOU CAN INCREASE OR DECREASE QUANTITY');
}
else
$tprice = $Price * $Pquantity;
$queryreg = mysql_query("
INSERT INTO repplac VALUES ('','$Sname','$Pname','$Pidno','$Psize','$Pcolour','$Pquantity','$Weblink','$Price','$tprice','$date','{$_SESSION['username']}')
")or die(mysql_error());
}
else
echo 'price field requires numbers';
}
else
echo 'please fill in all required * fields ';
}
?>
</div>
<form action='youraccount.php' method='Post' class='slistbar'>
    <!--<div>
    <label for='shoppinglist' class='fixedwidth'></label>
    <textarea type='text' name='shoppinglist' id='username' cols='100' rows='15'></textarea>
    </div> -->
    <div>
    <label for='Sname' class='fixedwidth'> * Shop name</label>
    <input type='text' name='Sname' id='Sname'/>
    </div>
    <div>
    <label for='Pname' class='fixedwidth'> * Product name</label>
    <input type='text' name='Pname' id='Pname'/>
    </div>
    <div>
    <label for='Pidno' class='fixedwidth'> * Product id no /ad reference</label>
    <input type='text' name='Pidno' id='Pidno'/>
    </div>
    <div>
    <label for='Psize' class='fixedwidth'>Product size</label>
    <input type='text' name='Psize' id='Psize'/>
    </div>
    <div>
    <label for='Pcolour' class='fixedwidth'>Product colour</label>
    <input type='text' name='Pcolour' id='Pcolour'/>
    </div>
    <div>
    <label for='Pquantity' class='fixedwidth'>Product quantity</label>
    <select name="Pquantity" id="Pquantity">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
      <option value="4">4</option>
      <option value="5">5</option>
      <option value="6">6</option>
      <option value="7">7</option>
      <option value="8">8</option>
      <option value="9">9</option>
      <option value="10">10</option> 
</select>
    </div>
    <div>
    <label for='Weblink' class='fixedwidth'> * Web link</label>
    <input type='text' name='Weblink' id='Weblink'/>
    </div>
    <div>
    <label for='Price' class='fixedwidth'> * Price GBP</label>
    <input type='text' name='Price' id='Price'/>
    </div>
    <div>

    <div class='buttonarea'>
            <p>
            <input type='submit' name='submit' value='Add'>
            </p>
            </div>
            </p>
    </form>
</div>
</div>
<div class="action-box rounded">
<div class="titlebar">
<h2>Shopping List</h2>
<a href='totalprice.php'>Update</a>
</div>
<div class="listbar">

    <form action='orderpplac.php' method='Post' class='slistbar'>
    <table border='1'>
    <tr>
    <th>SHOP NAME</th>
    <th>PRODUCT NAME</th>
    <th>PRODUCT SIZE</th>
    <th>PRODUCT COLOUR</th>
    <th>PRODUCT QUANTITY</th>
    <th>PRICE</th>
    <th>TOTAL</th>
    <th></th>
    </tr>
    <?php
    // Get DB results and loop, outputting table rows with counter
    $pplresult = mysql_query("SELECT * FROM repplac WHERE Uname = '{$_SESSION['username']}'") or die(mysql_error());
    while ($row = mysql_fetch_assoc($pplresult)) {
    echo "
    <tr>
    <td>".htmlspecialchars($row['Sname'])."</td>
    <td>".htmlspecialchars($row['Pname'])."</td>
    <td>".htmlspecialchars($row['Psize'])."</td>
    <td>".htmlspecialchars($row['Pcolour'])."</td>
    <td>
    <input type='text' name='item[$i][Pquantity]' id='Pquantity' value='".htmlspecialchars($row['Pquantity'])."' />
    <input type='hidden' name='item[$i][Pidno]' id='Pidno' value='".htmlspecialchars($row['Pidno'])."' />
    </td>
    <td>".htmlspecialchars($row['Price'])."</td>
    <td>
    <input type='text' name=tprice value='".htmlspecialchars($row['Tprice'])."' readonly>
    </td>
    <td><a href='deleteproduct.php?del=".htmlspecialchars($row['Pidno'])."'>delete</a></td>
    </tr>";
    }
   $pplresult = mysql_query("SELECT * FROM repplac WHERE Uname = '{$_SESSION['username']}'") or die(mysql_error());
  while ($row = mysql_fetch_assoc($pplresult)) 
   //echo $row['Pquantity'] * $row['Price'];
  {
  $totalprice += $row['Tprice'];
  }
  //echo "$totalprice";

         ?>
         <tr>
                <th>Total Price</th>
                <th><?php echo $totalprice; ?></th>

            </tr>
    <!--Close table and form-->

    </table>
    <input type='submit' name='submit1' value='UPDATE' />
    <input type='submit' name='submit2' value='SUBMIT' />
    </form>
</div>
</div>
<div class="action-box rounded">
<div class="titlebar">
<h2> payment & balance</h2>
</div>
<div class="listbar">
</div>
</div>
</div>
</div>
</div>
<?php include("include/footer.php");?>

這是更新的腳本

        <?php
require_once("include/session.php");
require_once("include/dataconnect.php"); 
require_once("include/functions.php");
if (isset($_POST['submit1'])) {
if(array_key_exists('item', $_POST)){

    //Loop through $_POST items, updating the database for each item
    foreach ($_POST['item'] as $item) { 
        $Pquantity = intval($item['Pquantity']);
        $Pidno = ($item['Pidno']); 
        $queryreg = mysql_query("
            UPDATE repplac
                 SET Pquantity = {$Pquantity}
                 WHERE
                       Pidno = '{$Pidno}'
                 AND
                       Uname = '{$_SESSION['username']}'
        ") or die(mysql_error());  

    }
    }
    $pplresult = mysql_query("SELECT * FROM repplac WHERE Uname = '{$_SESSION['username']}'") or die(mysql_error());
  while ($row = mysql_fetch_assoc($pplresult)) 
  {
   $Pidno = ($row['Pidno']);
  $totalprice = $row['Price'] * $row['Pquantity'];
   $queryreg = mysql_query("
  UPDATE repplac
  SET Tprice = {$totalprice}
  WHERE
                       Pidno = '{$Pidno}'
                 AND
                       Uname = '{$_SESSION['username']}'
    ") or die(mysql_error());  
  }

    }
    else if (isset($_POST['submit2'])) {
    //Get Email Address
    $emails = mysql_query("SELECT reusers.email FROM reusers INNER JOIN repplac ON reusers.username = repplac.Uname AND reusers.username = '{$_SESSION['username']}'")or die(mysql_error());
    //$emails = mysql_query("SELECT reusers.email FROM reusers INNER JOIN repplac ON reusers.username = repplac.Uname AND reusers.username = '".$_SESSION['username']."'")or die(mysql_error());
    $results = (mysql_fetch_assoc($emails)) or die(mysql_error());
    $email= $results['email'];

   if(mysql_num_rows($emails) == 0){
         exit("No email addresses found for user '{$_SESSION['username']}'");
    }
    $email = mysql_result($emails, 0);

    //Get list to email user
   $body = "<html><body><table border='1'>
<tr>
<th>Shop Name</th>
<th>Product Name</th>
<th>Size</th>
<th>Color Name</th>
<th>Quantity</th>
</tr>";
$pplresult = mysql_query("SELECT * FROM repplac WHERE Uname = '{$_SESSION['username']}'");   
while($row = mysql_fetch_assoc($pplresult)){ 
    $body .= "<tr>
        <td>" . $row['Sname'] ."</td>
        <td>" . $row['Pname'] ."</td>
        <td>" . $row['Psize'] ."</td>
        <td>" . $row['Pcolour'] ."</td>
        <td>" . $row['Pquantity'] ."</td>
        </tr>";
}

$body .="</table></body></html>";

   //Send email
$to = $email; 
   $subject = "YOUR ORDER LIST FROM REACHEASY"; 
$headers = "From: donotreply@rapsody.co.uk\r\n";  
$headers  .= 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
mail($to,$subject,$body,$headers);
        //Transfer records to wishlist 
    $transfer = mysql_query("INSERT INTO wishlist (SELECT  * FROM repplac WHERE Uname = '{$_SESSION['username']}')")or die(mysql_error());
    // Delete temporary records if the above query was successful:
    if($transfer !== false){
        $deletetable = mysql_query("DELETE FROM repplac WHERE Uname = '{$_SESSION['username']}'");
    }
}
redirect_to('youraccount.php'); 
?> 

Answer 1

您從哪里獲得$i

"<input type='text' name='item[$i][Pquantity]' id='Pquantity' value='".htmlspecialchars($row['Pquantity'])."' />"

從？ 您是否拋出所有錯誤，以便可以查看PHP是否在抱怨什么？ 您的錯誤級別設置為什么？

同樣，您的代碼的最后一部分可以使用SUM SQL聚合器函數，如下所示：

SELECT SUM(Tprice) FROM repplac WHERE Uname = '{$_SESSION['username']}'

Answer 2

您的數量被設置為0，因為intval無法將您的數量轉換為有效數字。 您需要調試$ item提交中返回的內容。