我试图在使用它预填充表单后删除数据，但在预填充表单之前它正在删除。虽然它重新填充得很好，但是当我尝试通过插入 if($queryreg !== false){ $deletetable = mysql_query("DELETE FROM addedprod WHERE Uname = '{$_SESSION['username']}' 来删除数据时"); } ?> 它根本行不通
<?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'])));
$comment = mysql_real_escape_string(htmlentities(strip_tags($_POST['comment'])));
$date = date("Y-m-d");
//echo "
('','$Sname','$Pname','$Pidno','$Psize','$Pcolour','$Pquantity','$Weblink','$Price','$Uname')";
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' AND Pname='$Pname'");
$count = mysql_num_rows($repeatheck);
if($count!=0)
{
die ('PRODUCT ALREADY IN BASKET YOU CAN INCREASE OR DECREASE QUANTITY, <a
href="youraccount.php">CLICK TO GO BACK TO YOUR LIST</a>');
}
else
//echo'$Price';
$tprice = $Price * $Pquantity;
//echo"$tprice";
$queryreg = mysql_query("
INSERT INTO repplac VALUES
('','$Sname','$Pname','$Pidno','$Psize','$Pcolour','$Pquantity','$Weblink','$Price','$comment'
,'$tprice','$date','{$_SESSION['username']}','')
")or die(mysql_error());
}
else
echo 'price field requires numbers';
}
else
echo 'please fill in all required * fields ';
}
if($queryreg !== false){
$deletetable = mysql_query("DELETE FROM addingprod WHERE Uname = '{$_SESSION['username']}'");
}
?>
<form action='youraccount.php' method='Post' class='ilistbar'>
<!--<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' value='<?php $addprodresult =
mysql_query("SELECT * FROM addingprod WHERE Uname = '{$_SESSION['username']}'") or
die(mysql_error());$row = mysql_fetch_array($addprodresult); echo $row{Sname}; ?>'/>
</div>
<div>
<label for='Pname' class='fixedwidth'> * Product name</label>
<input type='text' name='Pname' id='Pname' value='<?php $addprodresult =
mysql_query("SELECT * FROM addingprod WHERE Uname = '{$_SESSION['username']}'") or
die(mysql_error());$row = mysql_fetch_array($addprodresult); echo $row{Pname}; ?>'/>
</div>
<div>
<label for='Pidno' class='fixedwidth'> * Product id no /ad reference</label>
<input type='text' name='Pidno' id='Pidno' value='<?php $addprodresult =
mysql_query("SELECT * FROM addingprod WHERE Uname = '{$_SESSION['username']}'") or
die(mysql_error());$row = mysql_fetch_array($addprodresult); echo $row{Pidno}; ?>'/>
(This should be unique for each product)
</div>
<div>
<label for='Psize' class='fixedwidth'>Product size</label>
<input type='text' name='Psize' id='Psize' value='<?php $addprodresult =
mysql_query("SELECT * FROM addingprod WHERE Uname = '{$_SESSION['username']}'") or
die(mysql_error());$row = mysql_fetch_array($addprodresult); echo $row{Psize}; ?>'/>
</div>
<div>
<label for='Pcolour' class='fixedwidth'>Product colour</label>
<input type='text' name='Pcolour' id='Pcolour' value='<?php $addprodresult =
mysql_query("SELECT * FROM addingprod WHERE Uname = '{$_SESSION['username']}'") or
die(mysql_error());$row = mysql_fetch_array($addprodresult); echo $row{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>
(You can update quantity in excess of 10 on the shopping list below)
</div>
<div>
<label for='Weblink' class='fixedwidth'> * Web link</label>
<input type='text' name='Weblink' id='Weblink' value='<?php $addprodresult = mysql_query("SELECT * FROM addingprod WHERE Uname = '{$_SESSION['username']}'") or die(mysql_error());$row = mysql_fetch_array($addprodresult); echo $row{Weblink}; ?>'/>
</div>
<div>
<label for='Price' class='fixedwidth'> * Price GBP</label>
<input type='text' name='Price' id='Price' value='<?php $addprodresult = mysql_query("SELECT * FROM addingprod WHERE Uname = '{$_SESSION['username']}'") or die(mysql_error());$row = mysql_fetch_array($addprodresult); echo $row{Price}; ?>'/>
Please valid format is (.) for decimal
</div>
<div>
<label for='comment' class='fixedwidth'> Extra info</label>
<input type='text' name='comment' id='comment'/>
Please give different colours , sizes of the same products,discount codes, and other information that you would like us to use
</div>
<div>
<div class='buttonarea'>
<p>
<input type='submit' name='submit' value='Add'>
</p>
</div>
</p>
</form>