Unsetting a specific element of an Array

[Dubya008]

I am using session variables to keep track of what is in a shopping cart. I can add the items to the cart quite easily enough. But my problem is that I can't delete a specific item in the cart. Below is a summary of what the array looks like

 

$Item1=array("ProdID"=>"Hat","Color"=>"Not Needed","Size"=>5);

$Item4=array("ProdID"=>"Shirt","Color"=>"Green","Size"=>"L");

$Item2=array("ProdID"=>"Pants","Color"=>"Not Needed","Size"=>"32x32");

$Item3=array("ProdID"=>"Socks","Color"=>"Not Needed","Size"=>"Not Needed");

$NumItems=4;

$TestArray=array("NumItems"=>$NumItems,1=>$Item1,2=>$Item2,3=>$Item3,4=>$Item4);

 

However when I attempt to delete any of the top level elements (1,2,3,4,NumItems), I either end up deleting only the last element (4) or somehow taking out 2 of them. I know that this must be an easy fix but I've looked at it for so long that I can't seem to figure out what the problem is.

below is the code that I use to delete the Item from the array

$ItemNum=$_GET['item'];
		if ($ItemNum=="All"){
			$ItemNum=$_GET['item'];
		if ($ItemNum=="All"){
			unset($TestArray);
			unset($TestArray['NumItems']);
			unset($_SESSION['OrderTotal']);
			//header("Location:Cart.php?act=view");
		}
		else{
			$TestArray['NumItems']=$TestArray['NumItems']-1;
			if($TestArray['NumItems']<1)
			{
				unset($_SESSION['OrderTotal']);
				unset($TestArray);
				unset($TestArray['NumItems']);
			}
			else
			{
				unset($TestArray[$ItemNum]);
			}

 

Can anyone take a look at this and point me in the correct direction? What I am after is to delete any element of the top array and keep the rest.

 

[silkfire]

if ($ItemNum=="All"){

  $ItemNum=$_GET['item'];

if ($ItemNum=="All"){

  unset($TestArray);

 

Why do you have the same validation check here??

 

unset($TestArray);

unset($TestArray['NumItems']);

 

Why do you first delete the whole variable then one of its elements? Doesn't make sense.

 

$TestArray['NumItems']=$TestArray['NumItems']-1;

 

can be rewritten to:

 

$TestArray['NumItems']--

 

if($TestArray['NumItems']<1) I assume it can't be negative? So it can only be zero.

 

Then write:

 

if(!$TestArray['NumItems'])

 

[Dubya008]

okay So i made the changes that you suggested. It is now deleting 2 of the elements at once. Would I need to rebuild the entire array after I've deleted the element of the array?

 

$Item1=array("ProdID"=>"Hat","Color"=>"Not Needed","Size"=>5);
$Item4=array("ProdID"=>"Shirt","Color"=>"Green","Size"=>"L");
$Item2=array("ProdID"=>"Pants","Color"=>"Not Needed","Size"=>"32x32");
$Item3=array("ProdID"=>"Socks","Color"=>"Not Needed","Size"=>"Not Needed");
$NumItems=4;
$_SESSION['Cart']=array(1=>$Item1,2=>$Item2,3=>$Item3,4=>$Item4,"NumItems"=>$NumItems);

$ItemNum=$_GET['id'];
		if ($ItemNum=="All"){								//deleting everything in the  cart
			unset($_SESSION['Cart']);
		}
		else{
			$_SESSION['Cart']['NumItems']--;	//taking the number of items down by 1
			if(!$_SESSION['Cart']['NumItems'])	//checking to see if the number of items is above zero
			{
				unset($_SESSION['Cart']);			//if the number is above zero then delete the whole variable
			}
			else													//deleting a specific element of the array
			{
				echo "DELETING ".$_GET['id']."<br>";
				unset($_SESSION['Cart'][$ItemNum]);
			}

[silkfire]

Invert your logic by removing the exclamation mark. ! means NOT.