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remove item empties cart instead

C

captainmeowtron

macrumors member
Original poster
Dec 1, 2008
43
0
I have a problem, where if I check 'remove' for an item in the cart, then hit 'update', it removes all the items in the cart. Any ideas?
Code: 
<?

function AddBatch($_POST,$Session_Prefix)
{
  // Check  For Batch Count
  if (is_numeric($_POST['Batch_Count']))
  {
    $Batch_Count = $_POST['Batch_Count'];
  } else
  {
  	// Error, No ID, Send Away
    $Batch_Count = 0;
  }
  
  // Using a for loop, check through each field in form looking for check box
  for ($i = 0; $i < $Batch_Count; $i++)
  {
  	$Cur_CheckBox = "checkbox".$i;
  	// If box is checked, add item to cart
  	if ($_POST[$Cur_CheckBox]==1)
  	{
  	  
  	  // Parse Optional Inputs Into Title & Serial
  	  $title_In = cleanvalue($_POST['Title'.$i]);
  	  $serialnum_In = cleanvalue($_POST['SerialNum'.$i]);
  
  	  if (is_numeric($_POST['Price'.$i]))
  	  {
    	$price_In = $_POST['Price'.$i];
  	  } else
  	  {
    	// Error, No ID, Send Away
    	$price_In = '';
  	  }
  
  	  if (is_numeric($_POST['Shipping1'.$i]))
  	  {
    	$shipping1_In = $_POST['Shipping1'.$i];
  	  } else
  	  {
    	// Error, No ID, Send Away
    	$shipping1_In = '';
  	  }
  
  	  if (is_numeric($_POST['Shipping2'.$i]))
  	  {
    	$shipping2_In = $_POST['Shipping2'.$i];
  	  } else
  	  {
    	// Error, No ID, Send Away
    	$shipping2_In = '';
  	  }
	  
	  if (is_numeric($_POST['Quantity'.$i]))
  	  {
    	$Quantity_In = $_POST['Quantity'.$i];
  	  } else
  	  {
    	// Error, No ID, Send Away
    	$Quantity_In = '1';
  	  }
	  
	  
	  // Add Item To Cart
	  AddItemToCart($title_In,$serialnum_In,$price_In,$shipping1_In,$shipping2_In,$Session_Prefix,$Quantity_In);
	  
  	} // end if
  } // end for
  header("location:ShoppingCart.php");
} // end function

// Add Item To Cart ************************************************************************************************************
function AddItemToCart($Title,$SerialNum,$Price,$Shipping1,$Shipping2,$Session_Prefix,$Quantity='1')
{
  
  // Check To See If Cart Exists, And Set Count Accordingly
  if ($_SESSION[$Session_Prefix.'Item_Count']!="")
  {
    $Item_Row = $_SESSION[$Session_Prefix.'Item_Count'] + 1;
  } else
  {
    $Item_Row = 1;
  }
  
  // check to see if the new item's serial num is already in the shopping cart
  $searchflag = "";
  for ($i = 1; $i < $Item_Row; $i++)
  {
    $searchserialnum = "serialnum".$i;
	if ($_SESSION[$Session_Prefix.$searchserialnum]==$SerialNum)
    {
      $searchflag = $i;
    }
  }
  
  //If no match was found add the new info as a new entry (Item_Row)
  if ($searchflag=="")
  {
	// Prepare Cart Field Titles For New Entry
    $Title_serialnum = "serialnum".$Item_Row;
    $Title_shippinga = "shippinga".$Item_Row;
    $Title_shippingb = "shippingb".$Item_Row;
    $Title_title = "title".$Item_Row;
    $Title_price = "price".$Item_Row;
	$Title_quantity = "quantity".$Item_Row;
	
	$_SESSION[$Session_Prefix.$Title_serialnum] = $SerialNum;
	$_SESSION[$Session_Prefix.$Title_title] = $Title;
	$_SESSION[$Session_Prefix.$Title_shippinga] = $Shipping1;
	$_SESSION[$Session_Prefix.$Title_shippingb] = $Shipping2;
	$_SESSION[$Session_Prefix.$Title_price] = $Price;
	$_SESSION[$Session_Prefix.$Title_quantity] = $Quantity;
	$_SESSION[$Session_Prefix."Item_Count"] = $Item_Row;
	
  } else
  {
    //Otherwise just update the quanity of this item/serialnum

    $quantity = "quantity".$searchflag;
	$newquantity = $_SESSION[$Session_Prefix.$quantity] + $Quantity;
	$_SESSION[$Session_Prefix.$quantity] = $newquantity;
  } // end searchflag if
  header("location:ShoppingCart.php");
}


// ****************************************************************************************************************************************
function DisplayEditableCart($Session_Prefix,$Currency_Symbol,$Currency_Code)
{
  
  $RowCount=$RowCount+1;
  $TempCol=$RowCount%2+1;
  
  $Output = '';
  $Output = $Output.'<div align="center" class="Bold">
	  <table width="600" border="1" align="center" cellpadding="0" cellspacing="0">';
	  
  if (isset($_SESSION[$Session_Prefix.'Item_Count']) && $_SESSION[$Session_Prefix.'Item_Count']!=0)
  {
    $CheckOrd=1;
    $Output = $Output.'<tr>
          <td width="16%" class="RepeatRowColor'.$TempCol.'"><div align="center" class="FieldTitleColor'.$TempCol.'">Qty</div></td>
          <td width="10%" class="RepeatRowColor'.$TempCol.'"><div align="center" class="FieldTitleColor'.$TempCol.'">Remove</div></td>
		  <td colspan="2" class="RepeatRowColor'.$TempCol.'"><div align="center" class="FieldTitleColor'.$TempCol.'">Item</div></td>
          <td width="15%" class="RepeatRowColor'.$TempCol.'"><div align="right" class="FieldTitleColor'.$TempCol.'">Price</div></td>
        </tr>
       <form id="form2" name="form2" method="post" action="ShoppingCart.php">';
        
    //Setup Cart Vars
    $displaysubtotal=0;
    $displayshippingtotal=0;
    $displaytotal=0;
    $displaynewshipping=0;
    $displaynewprice=0;

    $final = $_SESSION[$Session_Prefix.'Item_Count']+1;
    $cnt=1;

	for ($i = 1; $i < $final; $i++)
	{
	  $RowCount=$RowCount+1;
      $TempCol=$RowCount%2+1;
	  
	  // Setup Vars for this Row
	  $displayshippinga = "shippinga".$i;
	  $displayshippingb = "shippingb".$i;
	  $displaytitle = "title".$i;
	  $displayprice = "price".$i;
	  $displayquantity = "quantity".$i;
	  $displayremove = "remove".$i;

	  // Calculate The Total Shipping For This Item
	  if ($_SESSION[$Session_Prefix.$displayquantity]>1)
	  {
  	  	$displaynewshipping = ($_SESSION[$Session_Prefix.$displayshippinga] + ($_SESSION[$Session_Prefix.$displayshippingb] * ($_SESSION[$Session_Prefix.$displayquantity] - 1)));
	  } else
	  {
	    $displaynewshipping = $_SESSION[$Session_Prefix.$displayshippinga];
	  }
	  // Calculate The price For This Item
	  $displaynewprice = $_SESSION[$Session_Prefix.$displayprice] * $_SESSION[$Session_Prefix.$displayquantity];

	  $Output = $Output.'<tr>
          <td class="RepeatRowColor'.$TempCol.'"><div align="center" class="DataTextColor'.$TempCol.'"><input name="'.$displayquantity.'" type="text" value="'.$_SESSION[$Session_Prefix.$displayquantity].'" size="3" maxlength="4"></div></td>
		  <td class="RepeatRowColor'.$TempCol.'"><div align="center" class="DataTextColor'.$TempCol.'"><input name="'.$displayremove.'" type="checkbox" value="1"></div></td>
          <td colspan="2" class="RepeatRowColor'.$TempCol.'"><div align="left" class="DataTextColor'.$TempCol.'">'.$_SESSION[$Session_Prefix.$displaytitle].'<br />
                  '.$_SESSION[$Session_Prefix.$displayserialnum].'</div></td>
          <td class="RepeatRowColor'.$TempCol.'"><div align="right" class="DataTextColor'.$TempCol.'">'.$Currency_Symbol.' '.number_format($displaynewprice, 2, '.', '').'</div></td>
        </tr>';

	  // Update The Total Vars
	  $displaysubtotal = $displaysubtotal + $displaynewprice;
	  $displayshippingtotal = $displayshippingtotal + $displaynewshipping;  	
	} // end For
	
	$RowCount=$RowCount+1;
    $TempCol=$RowCount%2+1;
	
	// Calculate Totals
	$displaytotal = ($displayshippingtotal + $displaysubtotal);
	$Output = $Output.'<tr>
          <td colspan="4" class="RepeatRowColor'.$TempCol.'"><div align="right" class="FieldTitleColor'.$TempCol.'">*Total ('.$Currency_Code.'):</div></td>
          <td class="RepeatRowColor'.$TempCol.'"><div align="right" class="DataTextColor'.$TempCol.'">'.$Currency_Symbol.' '.number_format($displaysubtotal, 2, '.', '').'</div></td>
        </tr>';
		
		$RowCount=$RowCount+1;
    $TempCol=$RowCount%2+1;
		
        $Output = $Output.'<tr>
          <td colspan="5" class="RepeatRowColor'.$TempCol.'"><div align="center" class="FieldTitleColor'.$TempCol.'">*Shipping 
                costs will be calculated upon checkout.</div></td>
        </tr>';
		
		$RowCount=$RowCount+1;
    $TempCol=$RowCount%2+1;

$Output = $Output.'<tr><td colspan="5" class="RepeatRowColor'.$TempCol.'"><div align="center" class="DataTextColor'.$TempCol.'"> 

<table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr> 
<td width="50%"><div align="center"> 
  
  <input name="cmd" type="hidden" id="cmd" value="4">
  <table width="0%" border="2" bordercolor="#FFFFFF">
    <tr>
      <td><div align="center" class="">
        <input name="Submit" type="submit" value="Update"/>
      </div></td>
    </tr>
  </table>
</div></td>
<td><div align="center">
  <table width="0%" border="2" bordercolor="#FFFFFF">
    <tr>
      <td><div align="center" class="">
<a href="ChoosePayment.php" class="InSiteLink"><img src="Checkout.jpg"</a> 
</div></td>
    </tr>
  </table>
</div></td>
<td><div align="center">
  <table width="0%" border="2" bordercolor="#FFFFFF">
    <tr>
      <td><div align="center" class="">
<a href="javascript:history.go(-1)"><img src="Continue Shopping.jpg"</a> 
</tr>
</table>
</div></td>
</tr>
  </form></table>';
  } else
  {
	$Output = $Output.'<tr>
          <td colspan="5" class="RepeatRowColor'.$TempCol.'"><div align="center" class="DataTextColor'.$TempCol.'">...Cart is Empty... <br />
          </div></td>
        </tr>
		</table>';
        
  } // end if

  $Output = $Output.'
  </div>';
  
  return $Output;
}

//********************************************************************************************************************
function UpdateCart($_POST,$Session_Prefix)
{
  
  // Loop Through Form Data
  for ($updatecnt = 1; $updatecnt < ($_SESSION[$Session_Prefix.'Item_Count'] + 1); $updatecnt++)
  {
    // Create Field Names
	$updatequantity = "quantity".$updatecnt;
	$updateremove = "remove".$updatecnt;
	
	// Check Numeric Inputs
	if (is_numeric($_POST[$updatequantity]))
	{
	  // Quanity is numeric, update cart
	  $_SESSION[$Session_Prefix.$updatequantity] = $_POST[$updatequantity];
	}

	if (is_numeric($_POST[$updateremove]))
	{
	  // Remove is numeric, update cart
	  if ($_POST[$updateremove]=="1")
	  {
	    $_SESSION[$Session_Prefix.$updatequantity] = 0;
	  }
	} 
	
	//Make Empty OR non-numeric quantities into zeros
	if ($_SESSION[$Session_Prefix.$updatequantity]=="" || !is_numeric($_SESSION[$Session_Prefix.$updatequantity]))
    {
      $_SESSION[$Session_Prefix.$updatequantity] = "0";
    }
	
	// Delete Serial Num for 0 quantity / removed items
	if ($_SESSION[$Session_Prefix.$updatequantity]=="0")
    {
      $updateserialnum = "serialnum".$updatecnt;
	  $_SESSION[$Session_Prefix.$updateserialnum] = "";
    }
	
  }
   
  // Repair The Cart
  // Run the Repair Process Until No Gaps Are Found!
  $gaps = "1";
  while ($gaps != 0)
  {
   $gaps = "0";
  
   // Main Loop For Dealing With Removing Deleted Items
   for ($updatecnt = 1; $updatecnt < ($_SESSION[$Session_Prefix.'Item_Count'] + 1); $updatecnt++)
   {
     $updateserialnum = "serialnum".$updatecnt;
	 // Check to see if the serial num exists
	 if ($_SESSION[$Session_Prefix.$updateserialnum]=="")
	{
	  // No Serialnum - gap found
	  $gaps = "1";
	  
	  // Set Field Titles For This And THis+1 Row:
	  $nextrow=$updatecnt+1;
	  $previousrow=$updatecnt-1;
	  
	  $updateserialnum = "serialnum".$updatecnt;
	  $updateserialnumnext = "serialnum".$nextrow;
	  $updateshippinga = "shippinga".$updatecnt;
	  $updateshippinganext = "shippinga".$nextrow;
	  $updateshippingb = "shippingb".$updatecnt;
	  $updateshippingbnext = "shippingb".$nextrow;
	  $updatetitle = "title".$updatecnt;
	  $updatetitlenext = "title".$nextrow;
	  $updateprice = "price".$updatecnt;
	  $updatepricenext = "price".$nextrow;
	  $updatequantity = "quantity".$updatecnt;
	  $updatequantitynext = "quantity".$nextrow;
	  
	  // Check To See If EOF
	  if ($nextrow < ($_SESSION[$Session_Prefix.'Item_Count'] + 1))
	  {
  		// Not EOF
		// Copy NextRow Info Down To This Row (and delete NextRow's SerialNum)
		$_SESSION[$Session_Prefix.$updateserialnum] = $_SESSION[$Session_Prefix.$updateserialnumnext];
		$_SESSION[$Session_Prefix.$updateshippinga] = $_SESSION[$Session_Prefix.$updateshippinganext];
		$_SESSION[$Session_Prefix.$updateshippingb] = $_SESSION[$Session_Prefix.$updateshippingbnext];
		$_SESSION[$Session_Prefix.$updatetitle] = $_SESSION[$Session_Prefix.$updatetitlenext];
		$_SESSION[$Session_Prefix.$updateprice] = $_SESSION[$Session_Prefix.$updatepricenext];
		$_SESSION[$Session_Prefix.$updatequantity] = $_SESSION[$Session_Prefix.$updatequantitynext];
		$_SESSION[$Session_Prefix.$updateserialnumnext] = "";
	  } else
	  {
	    // EOF
		// 
		$_SESSION[$Session_Prefix.$updateserialnum] = "";
		$_SESSION[$Session_Prefix.$updateshippinga] = "";
		$_SESSION[$Session_Prefix.$updateshippingb] = "";
		$_SESSION[$Session_Prefix.$updatetitle] = "";
		$_SESSION[$Session_Prefix.$updateprice] = "";
		$_SESSION[$Session_Prefix.$updatequantity] = "";
		$_SESSION[$Session_Prefix."Item_Count"] = $previousrow;
		
	  }  // end EOF check if
	  
	}
   } // end main loop for dealing with removing items
  } //endwhile
  header("location:ShoppingCart.php?u");
}

// ****************************************************************************************************************************************
function DisplayCartWShipping($Session_Prefix,$Currency_Symbol,$Currency_Code)
{
  $RowCount=$RowCount+1;
  $TempCol=$RowCount%2+1;
  $Output = '';
  
  $Output = $Output.'<table width="600" border="1" align="center" cellpadding="0" cellspacing="0">';
  
  if (isset($_SESSION[$Session_Prefix.'Item_Count']) && $_SESSION[$Session_Prefix.'Item_Count']!=0)
  {
	$CheckOrd=1;
	$Output = $Output.'<tr> 
	<td width="11%" class="RepeatRowColor'.$TempCol.'"><div align="center" class="FieldTitleColor'.$TempCol.'">Qty</div></td>
	<td width="52%" class="RepeatRowColor'.$TempCol.'"><div align="center" class="FieldTitleColor'.$TempCol.'">Item</div></td>
	<td width="21%" class="RepeatRowColor'.$TempCol.'"><div align="center" class="FieldTitleColor'.$TempCol.'">Shipping</div></td>
	<td width="16%" class="RepeatRowColor'.$TempCol.'"><div align="right" class="FieldTitleColor'.$TempCol.'">Price</div></td>
	</tr>';


	//Setup Cart Vars
	$displaysubtotal=0;
	$displayshippingtotal=0;
	$displaytotal=0;
	$displaynewshipping=0;
	$displaynewprice=0;

	$final = $_SESSION[$Session_Prefix.'Item_Count']+1;
	$cnt=1;

	for ($i = 1; $i < $final; $i++)
	{
	$RowCount=$RowCount+1;
    $TempCol=$RowCount%2+1;
	
	  // Setup Vars for this Row
	  $displayshippinga = "shippinga".$i;
	  $displayshippingb = "shippingb".$i;
	  $displaytitle = "title".$i;
	  $displayprice = "price".$i;
	  $displayquantity = "quantity".$i;
	  $displayremove = "remove".$i;
	  
	  
	  // Calculate The Total Shipping For This Item
	  if ($_SESSION[$Session_Prefix.$displayquantity]>1)
	  {
  		$displaynewshipping = ($_SESSION[$Session_Prefix.$displayshippinga] + ($_SESSION[$Session_Prefix.$displayshippingb] * ($_SESSION[$Session_Prefix.$displayquantity] - 1)));
	  } else
	  {
  		$displaynewshipping = $_SESSION[$Session_Prefix.$displayshippinga];
	  }
	  
	  
	  // Calculate The price For This Item
	  $displaynewprice = $_SESSION[$Session_Prefix.$displayprice] * $_SESSION[$Session_Prefix.$displayquantity];

	  $Output = $Output.'<tr> 
	  <td class="RepeatRowColor'.$TempCol.'"><div align="center" class="DataTextColor'.$TempCol.'">'.$_SESSION[$Session_Prefix.$displayquantity].'</div></td>
	  <td class="RepeatRowColor'.$TempCol.'"><div align="left" class="DataTextColor'.$TempCol.'">'.$_SESSION[$Session_Prefix.$displaytitle].'<br></div></td>
	  <td class="RepeatRowColor'.$TempCol.'"><div align="right" class="DataTextColor'.$TempCol.'">'.$Currency_Symbol.' '.number_format($displaynewshipping, 2, '.', '').'</div></td>
	  <td class="RepeatRowColor'.$TempCol.'"><div align="right" class="DataTextColor'.$TempCol.'">'.$Currency_Symbol.' '.number_format($displaynewprice, 2, '.', '').'</div></td>
	  </tr>';

	  // Update The Total Vars
	  $displaysubtotal = $displaysubtotal + $displaynewprice;
	  $displayshippingtotal = $displayshippingtotal + $displaynewshipping; 
	} // end For
	
	$RowCount=$RowCount+1;
    $TempCol=$RowCount%2+1;

  	// Calculate Totals
  	$displaytotal = ($displayshippingtotal + $displaysubtotal);

  	$Output = $Output.'<tr> 
	<td colspan="2" class="RepeatRowColor'.$TempCol.'"><div align="right" class="FieldTitleColor'.$TempCol.'">Sub Totals ('.$Currency_Code.'):</div></td>
	<td class="RepeatRowColor'.$TempCol.'"><div align="right" class="DataTextColor'.$TempCol.'">'.$Currency_Symbol.' '.number_format($displayshippingtotal, 2, '.', '').'</div></td>
	<td class="RepeatRowColor'.$TempCol.'"><div align="right" class="DataTextColor'.$TempCol.'">'.$Currency_Symbol.' '.number_format($displaysubtotal, 2, '.', '').'</div></td>
	</tr>';
	
	$RowCount=$RowCount+1;
    $TempCol=$RowCount%2+1;
	
	$Output = $Output.'<tr> 
	<td colspan="4" class="RepeatRowColor'.$TempCol.'"><div align="right" class="FieldTitleColor'.$TempCol.'">Total With Shipping ('.$Currency_Code.'): <span class="DataTextColor'.$TempCol.'">'.$Currency_Symbol.' '.number_format($displaytotal, 2, '.', '').'</span></div></td>
	</tr>';

  } else
  {
  	$Output = $Output.'<tr>
                  <td colspan="4" class="RepeatRowColor'.$TempCol.'"><div align="center" class="DataTextColor'.$TempCol.'">...Cart is Empty... <br>
                    </div></td>
            </tr>';
			
  } // end if
                
  $Output = $Output.'</table>';
  return $Output;
}
// 8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888
function GetCartTotals($Session_Prefix)
{
  $Output = '';
  
  if (isset($_SESSION[$Session_Prefix.'Item_Count']) && $_SESSION[$Session_Prefix.'Item_Count']!=0)
  {
	$CheckOrd=1;
	
	//Setup Cart Vars
	$displaysubtotal=0;
	$displayshippingtotal=0;
	$displaytotal=0;
	$displaynewshipping=0;
	$displaynewprice=0;

	$final = $_SESSION[$Session_Prefix.'Item_Count']+1;

	for ($i = 1; $i < $final; $i++)
	{
	
	  // Setup Vars for this Row
	  $displayserialnum = "serialnum".$i;
	  $displayshippinga = "shippinga".$i;
	  $displayshippingb = "shippingb".$i;
	  $displaytitle = "title".$i;
	  $displayprice = "price".$i;
	  $displayquantity = "quantity".$i;
	  $displayremove = "remove".$i;
	  
	  // Calculate The Total Shipping For This Item
	  if ($_SESSION[$Session_Prefix.$displayquantity]>1)
	  {
  		$displaynewshipping = ($_SESSION[$Session_Prefix.$displayshippinga] + ($_SESSION[$Session_Prefix.$displayshippingb] * ($_SESSION[$Session_Prefix.$displayquantity] - 1)));
	  } else
	  {
  		$displaynewshipping = $_SESSION[$Session_Prefix.$displayshippinga];
	  }
	  
	  // Calculate The price For This Item
	  $displaynewprice = $_SESSION[$Session_Prefix.$displayprice] * $_SESSION[$Session_Prefix.$displayquantity];

	  // Update The Total Vars
	  $displaysubtotal = $displaysubtotal + $displaynewprice;
	  $displayshippingtotal = $displayshippingtotal + $displaynewshipping; 
	} // end For
	
  	// Calculate Totals
  	$displaytotal = ($displayshippingtotal + $displaysubtotal);

  	$Output['Shipping_Total']=$displayshippingtotal;
	$Output['Sub_Total']=$displaysubtotal;
	$Output['Order_Total']=$displaytotal;
	
  }                 
  
  return $Output;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function cleanvalue($strvalue) { // remove dangerous data from the value passed
	$newvalue = strip_tags($strvalue);
	$newvalue = str_replace("|", " ", $newvalue);
	$newvalue = str_replace("'", " ", $newvalue);
	$newvalue = stripslashes($newvalue);
	return $newvalue;
}
 
Can't know for sure after browsing your code.

If I was troubleshooting this, I'd use print_r to show both $_POST and $_SESSION at the beginning and end of your UpdateCart function. Especially after running through the gap repair after testing removal of a few items. I'm thinking some of your conditions which set the serial number to blank just prior to gap repair are playing a role.

Remember with unchecked checkboxes the associated $_POST form variable will not be populated. I don't see you using isset() to see if $_POST[$updateremove] exists, for example. By adding in the print_r I'd determine how the values change, and start checking the if/then conditions you added before gap repair to see if you're blanking out items that should not be blanked and are purged via gap repair. If they're correct, start looking at gap repair.

So since I can't see it run in action as you provided no URL to test, plus only you can debug it locally, I'm not sure of the issue and you might want to wait for others who have a little more time to delve deep into your 500+ lines of code.

On an unrelated side note:

You also might consider using array_slice to simply remove array elements so there is no need for your gap repair method at all. I also might use form names like "remove[]" because PHP automatically converts that to an array $_POST['remove'] on form submission. I prefer walking through arrays than looping through "remove1" and 'remove2" hardcoded form names. But to each their own.

-jim
 
I think (I don't do PHP much) that the issue is in your UpdateCart function. It looks like your cart repair will pretty much delete anything after the first intentionally deleted row.

It looks like it is looking at every item and if the item has a blank $_SESSION[$Session_Prefix.$updateserialnum] then the next row replaces the current row. But when you replace the current row you also set the $_SESSION[$Session_Prefix.$updateserialnumnext] to blank. Now $gaps is set to 1 so when it hits the while statement it goes back through the items looking for a blank serialnum. It finds one again since you set it to blank for the moved row. So it deletes that row and moves the next row into the current row again setting the moved rows serial to blank.

That's just my guess though...
 
Thanks so much, guys. I realize it's a lot of code to look through, and I appreciate your help. I'm going to look at each thing you've mentioned and try to sort it out.
 
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