printing 2 dimensional session arrays...

sfaiz

hi...i am trying to print products added in a shopping cart....cart will be showed in table rows for each products, along with product name, quantity and cost...if a similar product already exists then instead of creating a new row in the cart then only the quantity value will be updated by adding previous quantity with the new quantity entered. if a new product is added to the cart then a new row will be printed and shown....now this is what i have done as below(plz see code)...please note how i am trying to print all the contents of the array using the loop....particularly in the section where the product with same name doesn't exist....with this whenever a new product is selected then instead of creating a new row it is actually creating another table....am i using the loop correctly?!?!?.....please help..

<?php
session_start();
?>
<html>
<head>
<title> Assignment 1 - Sayed Faiz and Denzil De Sousa </title>
<link rel="stylesheet" href="MainBodyStyle2.css" type="text/css">
</head>
<body>
<?php
if (!empty($_REQUEST['ProductName']))//if something is received from the form
{     

	$name = $_REQUEST['ProductName'];

if (!isset($_SESSION['cart']))//if session doesn't  exists
{	

	$_SESSION['cart'][$name] = array($name, $_REQUEST['Quantity'], $_REQUEST['UnitPrice']);
	print "<p class='style4'>Products in your Shopping Cart</p>";
	print "<table border='0' class='style5'>";
	print "<tr><td bgcolor='#00CC99'><div align='center'>Product Name</div></td><td bgcolor='#00CC99'><div align='center'>Quantity Added</div></td><td bgcolor='#00CC99'><div align='center'>Product Cost</div></td></tr>";
	print "<tr bgcolor='#0099CC'>";
	print "<td bgcolor='#00CCCC'><div align='center'>".$_SESSION['cart'][$name][0]."</div></td><td bgcolor='#00CCCC'><div align='center'>".$_SESSION['cart'][$name][1]."</div></td><td bgcolor='#00CCCC'><div align='center'>$".$_REQUEST['UnitPrice']*$_SESSION['cart'][$name][1]."</div></td>";
	print "</tr>";
	print "<tr>";
	print "<td>&nbsp;</td><td bgcolor='#0099CC' class='style1'><div align='center'>Total Cost</div></td><td bgcolor='#0099CC' class='style1'><div align='center'> $".$_SESSION['cart'][$name][0]."</div></td>";
	print "</tr>";
	print "<tr><td><form name='bottomright' action='Purchase.php' target='topright' method='post'><div align='center'><input 		type='submit' value='CHECKOUT'></div><td><div align='center'><input type='button' value='Empty Cart' onClick='self.location=\"clearcart.php\"' TARGET='bottomright'></div></td></tr>";
	print "</table>";  
}
else //if session exists
{
	if (!isset($_SESSION['cart'][$name])) //if product with same  	
		{
		$_SESSION['cart'][$name] = array($name, $_REQUEST['Quantity'], $_REQUEST['UnitPrice']);

		for($i = 0;$i<sizeof($_SESSION['cart']);$i++) 
		{
			print "<p class='style4'>Products in your Shopping Cart</p>";
			print "<table border='0' class='style5'>";
			print "<tr><td bgcolor='#00CC99'><div align='center'>Product Name</div></td><td bgcolor='#00CC99'><div align='center'>Quantity Added</div></td><td bgcolor='#00CC99'><div align='center'>Product Cost</div></td></tr>";
			print "<tr bgcolor='#0099CC'>";
			print "<td bgcolor='#00CCCC'><div align='center'>".$_SESSION['cart'][$i][0]."</div></td><td bgcolor='#00CCCC'><div align='center'>".$_SESSION['cart'][$i][1]."</div></td><td bgcolor='#00CCCC'><div align='center'>$".$_REQUEST['UnitPrice']*$_SESSION['cart'][$i][1]."</div></td>";
			print "</tr>";
			print "<tr>";
			print "<td>&nbsp;</td><td bgcolor='#0099CC' class='style1'><div align='center'>Total Cost</div></td><td bgcolor='#0099CC' class='style1'><div align='center'> $".$_SESSION['cart'][$i][0]."</div></td>";
			print "</tr>";
			print "<tr><td><form name='bottomright' action='Purchase.php' target='topright' method='post'><div align='center'><input 		type='submit' value='CHECKOUT'></div><td><div align='center'><input type='button' value='Empty Cart' onClick='self.location=\"clearcart.php\"' TARGET='bottomright'></div></td></tr>";
			print "</table>";  
		}
	}

	else //if product with same name exists
		{	
			$qty = $_REQUEST['Quantity'];

			$_SESSION['cart'][$name][1] += $qty;  

			for($i = 0;$i<sizeof($_SESSION['cart']);$i++)
			{
			print "<p class='style4'>Products in your Shopping Cart</p>";
			print "<table border='0' class='style5'>";
			print "<tr><td bgcolor='#00CC99'><div align='center'>Product Name</div></td><td bgcolor='#00CC99'><div align='center'>Quantity Added</div></td><td bgcolor='#00CC99'><div align='center'>Product Cost</div></td></tr>";
			print "<tr bgcolor='#0099CC'>";
			print "<td bgcolor='#00CCCC'><div align='center'>".$_SESSION['cart'][$name][0]."</div></td><td bgcolor='#00CCCC'><div align='center'>".$_SESSION['cart'][$name][1]."</div></td><td bgcolor='#00CCCC'><div align='center'>$".$_REQUEST['UnitPrice']*$_SESSION['cart'][$name][1]."</div></td>";
			print "</tr>";
			print "<tr>";
			print "<td>&nbsp;</td><td bgcolor='#0099CC' class='style1'><div align='center'>Total Cost</div></td><td bgcolor='#0099CC' class='style1'><div align='center'> $".$_SESSION['cart'][$name][1]."</div></td>";
			print "</tr>";
			print "<tr><td><form name='bottomright' action='Purchase.php' target='topright' method='post'><div align='center'><input 		type='submit' value='CHECKOUT'></div><td><div align='center'><input type='button' value='Empty Cart' onClick='self.location=\"clearcart.php\"' TARGET='bottomright'></div></td></tr>";
			print "</table>";  
		}	
		}	
}
}
else //if nothing is received from the form
{
    print "<p class='style2'>Your Shopping Cart is Empty</p>";
}  

?>
</p>
</body>


</html>

dagon

step one foreach() is far easier and faster than your for()

sfaiz

but what is the problem with my coding?!?! dats what i am asking.....am i caling the array elements correctly to show each elements....?!?! or is it in a different way!?!?

Weedpacket

sfaiz wrote:

<title> Assignment 1 - Sayed Faiz and Denzil De Sousa </title>

Funny title for a web page ... what does Denzil think?

instead of creating a new row it is actually creating another table...

Because you're telling it to.

            for($i = 0;$i<sizeof($_SESSION['cart']);$i++)
            {
                print "<p class='style4'>Products in your Shopping Cart</p>";
                print "<table border='0' class='style5'>";
...
                print "</table>";  

            }

__berfuzz

Why are you using REQUEST to get info from the form? I mean instead of POST or GET?

What do you get if you print_r() the result? Try it on the post-array and the session-array just to see. If it is satisfying next step would be changeing to $_POST['']. Last but not least, reading up on foreach()