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Undefined error and checkout adding more items!

aboyce2107

By aboyce2107
in PHP Coding Help

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aboyce2107 Newbie

aboyce2107

Posted
Posted

 Okay here's the problem, I've got my code typed up and everything seems to be working. However this comes up:

 

Notice: Undefined variable: storeID in \\Chapter 10\ReinforcementExercises\class_OnlineStores.php on line 101

 

first of all the variable has alread been defined in the class definition.

Secondly, I'm having more items being added to the shopping cart when the checkout link is clicked.

 

 

 

checkout function

 

public function checkout() {
$ProductsOrdered = 0;
foreach($this->shoppingCart as $productID => $quantity) {
if ($quantity > 0) {
++$ProductsOrdered;
$SQLstring = "INSERT INTO orders " .
" (orderID, prductID, quantity) " .
" VALUES('" . session_id() ."', " .
"'$productID', $quantity)";
$QueryResult =
$this->DBConnect->query($SQLstring);
}
}
echo "<p><strong>Your order has been " .
"recorded.</strong></p>\n";
}
 
and the getProductList function
 
public function getProductList() {
$retval = FALSE;
$subtotal = 0;
 
if (count($this->inventory) > 0) {
echo "<table width='100%'>\n";
echo "<tr><th>Product</th><th>Description</th>" .
"<th>Price Each</th><th># in Cart</th>" .
"<th>Total Price</th><th> </th></tr>\n";
foreach ($this->inventory as $ID => $Info) {
echo "<tr><td>" . htmlentities($Info['name'])
. "</td>\n";
echo "<td>" .
htmlentities($Info['description']) .
"</td>\n";
printf("<td class='currency'>$%.2f</td>\n", $Info['price']);
echo "<td class='currency'>" .
$this->shoppingCart[$ID] .
"</td>\n";
printf("<td class='currency'>$%.2f
 </td>\n", $Info['price'] * 
 $this->shoppingCart[$ID]);
echo "<td><a href='" . $_SERVER['SCRIPT_NAME'] .
"?PHPSESSID=" . session_id() .
"&ItemToAdd=$ID'>Add " .
" Item</a><br />\n";
echo "<a href='" . $_SERVER['SCRIPT_NAME'] .
"?PHPSESSID=" . session_id() .
"&ItemToRemove=$ID'>Remove " .
" Item</a></td>\n";
$subtotal += ($Info['price'] *
 $this->shoppingCart[$ID]);
}
echo "<tr><td colspan='4'>Subtotal</td>\n";
printf("<td class='currency'>$%.2f</td>\n",
 $subtotal);
echo "<td><a href='" . $_SERVER['SCRIPT_NAME'] .
"?PHPSESSID=" . session_id() .
"&EmptyCart=TRUE'>Empty " .
" Cart</a></td></tr>\n";
echo "</table>";
echo "<p><a href=' 'Checkout.php?PHPSESSID='" .
session_id() . "&CheckOut=$storeID'>Checkout</a></p>\n"; - this is where the error is being indicated.
$retval = TRUE;
}
return($retval);
}

 

 

I'd appreciate any help anyone can provide...

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aboyce2107 Newbie

aboyce2107

Posted
  • Author
Posted

Yeah, sorry about that I was in a hurry when I posted this. Here's what the code looks like.

 

 

<?php

 

class OnlineStore {
private $DBConnect = NULL;
private $storeID = "";
private $inventory = array();
private $shoppingCart = array();
 
function __construct() {
include("inc_OnlineStoreDB.php");
$this->DBConnect = $DBConnect;
}
function __destruct() {
if (!$this->DBConnect->connect_error)
$this->DBConnect->close();
}
public function setStoreID($storeID) {
if ($this->storeID != $storeID) {
$this->storeID = $storeID;
$SQLstring = "SELECT * FROM inventory " .
 " where storeID = '" .
 $this->storeID . "'";
$QueryResult = @$this->DBConnect->query($SQLstring);
if ($QueryResult === FALSE) {
    $this->storeID = "";
}
else {
$this->inventory = array();
$this->shoppingCart = array();
while (($Row = $QueryResult->fetch_assoc()) !== NULL) {
        $this->inventory[$Row['productID']] = array();
        $this->inventory[$Row['productID']]['name'] = $Row['name'];
        $this->inventory[$Row['productID']]['description'] = $Row['description'];
        $this->inventory[$Row['productID']]['price'] = $Row['price'];
        $this->shoppingCart[$Row['productID']] = 0;
                    }
               }
          }
     }
public function getStoreInformation() {
$retval = FALSE;
if ($this->storeID != "") {
    $SQLstring = "SELECT * FROM store_info " .
  " where storeID = '" .
  $this->storeID . "'";
    $QueryResult = @$this->DBConnect->query($SQLstring);
    if ($QueryResult !== FALSE) {
$retval = $QueryResult->fetch_assoc();
    }
         }
         return($retval);
}
public function getProductList() {
$retval = FALSE;
$subtotal = 0;
 
if (count($this->inventory) > 0) {
echo "<table width='100%'>\n";
echo "<tr><th>Product</th><th>Description</th>" .
"<th>Price Each</th><th># in Cart</th>" .
"<th>Total Price</th><th> </th></tr>\n";
foreach ($this->inventory as $ID => $Info) {
     echo "<tr><td>" . htmlentities($Info['name'])
    . "</td>\n";
     echo "<td>" .
    htmlentities($Info['description']) .
    "</td>\n";
     printf("<td class='currency'>$%.2f</td>\n", $Info['price']);
     echo "<td class='currency'>" .
    $this->shoppingCart[$ID] .
    "</td>\n";
     printf("<td class='currency'>$%.2f
    </td>\n", $Info['price'] * 
    $this->shoppingCart[$ID]);
     echo "<td><a href='" . $_SERVER['SCRIPT_NAME'] .
    "?PHPSESSID=" . session_id() .
    "&ItemToAdd=$ID'>Add " .
    " Item</a><br />\n";
     echo "<a href='" . $_SERVER['SCRIPT_NAME'] .
    "?PHPSESSID=" . session_id() .
    "&ItemToRemove=$ID'>Remove " .
    " Item</a></td>\n";
     $subtotal += ($Info['price'] *
 $this->shoppingCart[$ID]);
}
echo "<tr><td colspan='4'>Subtotal</td>\n";
printf("<td class='currency'>$%.2f</td>\n",
        $subtotal);
echo "<td><a href='" . $_SERVER['SCRIPT_NAME'] .
         "?PHPSESSID=" . session_id() .
         "&EmptyCart=TRUE'>Empty " .
         " Cart</a></td></tr>\n";
echo "</table>";
echo "<p><a href=' 'Checkout.php?PHPSESSID='" .
         session_id() . "&CheckOut=$storeID'>Checkout</a></p>\n";  - line of code that the error is indicating
$retval = TRUE;
    }
    return($retval);
}
public function addItem() {
$ProdID = $_GET['ItemToAdd'];
if (array_key_exists($ProdID, $this->shoppingCart))
    $this->shoppingCart[$ProdID] += 1;
}
function __wakeup() {
include("inc_OnlineStoreDB.php");
$this->DBConnect = $DBConnect;
}
private function removeItem() {
$ProdID = $_GET['ItemToRemove'];
if (array_key_exists($ProdID, $this->shoppingCart))
     if ($this->shoppingCart[$ProdID]>0)
         $this->shoppingCart[$ProdID] -= 1;
}
private function emptyCart() {
foreach ($this->shoppingCart as $key => $value)
$this->shoppingCart[$key] = 0;
}
public function processUserInput() {
if (!empty($_GET['ItemToAdd']))
    $this->addItem();
if (!empty($_GET['ItemToRemove']))
    $this->removeItem();
if (!empty($_GET['EmptyCart']))
    $this->emptyCart();
}
public function checkout() {
$ProductsOrdered = 0;
foreach($this->shoppingCart as $productID => $quantity) {
     if ($quantity > 0) {
++$ProductsOrdered;
$SQLstring = "INSERT INTO orders " .
   " (orderID, prductID, quantity) " .
   " VALUES('" . session_id() ."', " .
   "'$productID', $quantity)";
$QueryResult =
       $this->DBConnect->query($SQLstring);
      }
}
echo "<p><strong>Your order has been " .
         "recorded.</strong></p>\n";
}
}
?>
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maxxd Prolific Member

maxxd

Posted
Posted (edited)

Okay the error's gone now

 

It shouldn't be - I still don't see where you're defining $storeID in getProductList(). Unless the code has changed, you should still be getting the undefined variable error.

Edited by maxxd
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aboyce2107 Newbie

aboyce2107

Posted
  • Author
Posted 
<?php
class OnlineStore {
	private $DBConnect = NULL;
	private $storeID = "";
	private $inventory = array();
	private $shoppingCart = array();
	
	function __construct() {
		include("inc_OnlineStoreDB.php");
		$this->DBConnect = $DBConnect;
	}
	function __destruct() {
		if (!$this->DBConnect->connect_error)
			$this->DBConnect->close();
	}
	public function setStoreID($storeID) {
		if ($this->storeID != $storeID) {
			$this->storeID = $storeID;
			$SQLstring = "SELECT * FROM inventory " .
					  " where storeID = '" .
					  $this->storeID . "'";
			$QueryResult = @$this->DBConnect->query($SQLstring);
			if ($QueryResult === FALSE) {
				$this->storeID = "";
			}
			else {
				$this->inventory = array();
				$this->shoppingCart = array();
				while (($Row = $QueryResult->fetch_assoc()) !== NULL) {
					$this->inventory[$Row['productID']] = array();
					$this->inventory[$Row['productID']]['name'] = $Row['name'];
					$this->inventory[$Row['productID']]['description'] = $Row['description'];
					$this->inventory[$Row['productID']]['price'] = $Row['price'];
					$this->shoppingCart[$Row['productID']] = 0;
				}
			}
		}
	}
	public function getStoreInformation() {
		$retval = FALSE;
		if ($this->storeID != "") {
			$SQLstring = "SELECT * FROM store_info " .
					   " where storeID = '" .
					   $this->storeID . "'";
			$QueryResult = @$this->DBConnect->query($SQLstring);
			if ($QueryResult !== FALSE) {
				$retval = $QueryResult->fetch_assoc();
			}
		}
		return($retval);
	}
	public function getProductList() {
		$retval = FALSE;
		$subtotal = 0;
		
		if (count($this->inventory) > 0) {
			echo "<table width='100%'>\n";
			echo "<tr><th>Product</th><th>Description</th>" .
				 "<th>Price Each</th><th># in Cart</th>" .
				 "<th>Total Price</th><th> </th></tr>\n";
			foreach ($this->inventory as $ID => $Info) {
				echo "<tr><td>" . htmlentities($Info['name'])
					 . "</td>\n";
				echo "<td>" .
					 htmlentities($Info['description']) .
					 "</td>\n";
				printf("<td class='currency'>$%.2f</td>\n", $Info['price']);
				echo "<td class='currency'>" .
					 $this->shoppingCart[$ID] .
					 "</td>\n";
				printf("<td class='currency'>$%.2f
					  </td>\n", $Info['price'] * 
					  $this->shoppingCart[$ID]);
				echo "<td><a href='" . $_SERVER['SCRIPT_NAME'] .
					 "?PHPSESSID=" . session_id() .
					 "&ItemToAdd=$ID'>Add " .
					 " Item</a><br />\n";
				echo "<a href='" . $_SERVER['SCRIPT_NAME'] .
					 "?PHPSESSID=" . session_id() .
					 "&ItemToRemove=$ID'>Remove " .
					 " Item</a></td>\n";
				$subtotal += ($Info['price'] *
						  $this->shoppingCart[$ID]);
			}
			echo "<tr><td colspan='4'>Subtotal</td>\n";
			printf("<td class='currency'>$%.2f</td>\n",
				  $subtotal);
			echo "<td><a href='" . $_SERVER['SCRIPT_NAME'] .
				 "?PHPSESSID=" . session_id() .
				 "&EmptyCart=TRUE'>Empty " .
				 " Cart</a></td></tr>\n";
			echo "</table>";
			echo "<p><a href=' 'Checkout.php?PHPSESSID='" .
				 session_id() . "&CheckOut=$this->storeID'>Checkout</a></p>\n";
			$retval = TRUE;
		}
		return($retval);
	}
	public function addItem() {
		$ProdID = $_GET['ItemToAdd'];
		if (array_key_exists($ProdID, $this->shoppingCart))
			$this->shoppingCart[$ProdID] += 1;
	}
	function __wakeup() {
		include("inc_OnlineStoreDB.php");
		$this->DBConnect = $DBConnect;
	}
	private function removeItem() {
		$ProdID = $_GET['ItemToRemove'];
		if (array_key_exists($ProdID, $this->shoppingCart))
			if ($this->shoppingCart[$ProdID]>0)
				$this->shoppingCart[$ProdID] -= 1;
	}
	private function emptyCart() {
		foreach ($this->shoppingCart as $key => $value)
					$this->shoppingCart[$key] = 0;
	}
	public function processUserInput() {
		if (!empty($_GET['ItemToAdd']))
			$this->addItem();
		if (!empty($_GET['ItemToRemove']))
			$this->removeItem();
		if (!empty($_GET['EmptyCart']))
			$this->emptyCart();
	}
	public function checkout() {
		$ProductsOrdered = 0;
		foreach($this->shoppingCart as $productID => $quantity) {
			if ($quantity > 0) {
				++$ProductsOrdered;
				$SQLstring = "INSERT INTO orders " .
						" (orderID, prductID, quantity) " .
						" VALUES('" . session_id() ."', " .
						"'$productID', $quantity)";
				$QueryResult =
						$this->DBConnect->query($SQLstring);
			}
		}
		echo "<p><strong>Your order has been " .
			 "recorded.</strong></p>\n";
	}
}
?>

Sorry about that I'm still getting used to this site!!! Anyways this is the corrected code!

 

 

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aboyce2107 Newbie

aboyce2107

Posted
  • Author
Posted

what is the code on checkout.php ?

 

use the code tag when you post PHP - when you're posting it's the little blue icon that looks like this: < >

Thanks for the help about posting php code.

 

Here's the checkout.php

<?php
session_start();
require_once("class_OnlineStores.php");
$storeID = $_GET['CheckOut'];
$storeInfo = array();
if (class_exists("OnlineStore")) {
	if (isset($_SESSION['currentStore']))
		$Store = unserialize($_SESSION['currentStore']);
	else{
		$Store = new OnlineStore();
	}
	$Store->setStoreID($storeID);
	$storeInfo = $Store->getStoreInformation();
}
else {
	$ErrorMsgs[] = "The OnlineStore class is not available !";
	$Store = NULL;
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title><?php echo $storeInfo['name']; ?> Checkout</title>
<link rel="stylesheet" type="text/css" href="<?php echo $storeInfo['css_file']; ?>" />
</head>
<body>
<h1><?php echo htmlentities($storeInfo['name']); ?></h1>
<h2>Checkout</h2>

<?php
$Store->checkout();
?>
</body>
</html>
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