Session-Based Shopping Cart

[ballouta]

Hi,

I have a good shopping cart session-based code, but it is missing a remove option for each item in the cart!

 

<?php
//this is the ADD to cart code, no problems
if ($_POST['add'])
{
    foreach ($_POST['qty'] as $k => $v)
    {
        // if the value is 0 or negative
        // don't bother changing the cart
        if ($v > 0)
        {
		//echo "V = $v and K = $k"; V = QTY and K = article
            $_SESSION['cart'][$k] = $_SESSION['cart'][$k] + $v;
        }
    }    
}
?>

 

and this is the update code:

<?php
if ($_POST['update'])
{
    foreach ($_POST['qty'] as $k => $v)
    {
        // if the value is empty, 0 or negative
        // don't bother changing the cart
        if ($v != "" && $v >= 0)
        {
            $_SESSION['cart'][$k] = $v;
        }
    }    
}

?>

 

I tried to 'imitate' the update abd clear code and did the following:

in the cart itself:

 

<?php
	<input type ='hidden' size=2 type=text name=\"qtyy[" . $k . "]\">
	<input type='submit' name='remove' value='Remove'>


//and I added those lines those

if ($_POST['remove'])
{
    foreach ($_POST['qtyy'] as $k => $v)
    {
echo "V==$v";
            $_SESSION['cart'][$k] = 0;
    }    
}
?>

 

The Shopping cart is of course didn;t work with my remove modification, could you please help me?

Please note that If i update any item qty in the cart to zero, it disappears.

 

Thank you so much

[Silverado_NL]

hmm cant find anything wrong, are u getting any error messages?

if not maybe turn on error handling in your script.

 

 

can u catch the $_POST[remove] and $_POST[qtty] data at the start of the script?

might be worth while to check,try to do a

print_f($_POST);

and see if the form is working.

other than that i cant seem to find anything wrong, except for the key which is named qtyy instead of just qty.(think  that's on purpose)

[The Little Guy]

What I would do, is find what the item is, then do unset

 

So something like this...

<?php
$id = $_POST['itemid'];   // Get the item ID to remove
if ($_POST['remove']){
    foreach ($_SESSION['cart'] as $k => $v){
        if ($v == $id){
            unset($_SESSION['cart'][$k]);
        }
    }    
}

?>

[ballouta]

Hi The Little Guy

 

in this situation, what would be the code in teh cart form instead of those two lines?

 

<input type ='hidden' size=2 type=text name=\"qtyy[" . $k . "]\">

<input type='submit' name='remove' value='Remove'>

 

thank you

[The Little Guy]

I would use a check box.

 

So...

 

foreach($_SESSION['cart'] as $id){
     echo 'Remove: <input type="checkbox" name="itemid[]" value="'.$id.'" /><br />';
}
echo '<input type="submit" name="remove" value="Remove" />';

 

Then I actually would check like this:

 

if (isset($_POST['remove'])){
    foreach ($_POST['itemid'] as $id){
        if (in_array($id, $_SESSION['cart'])){
            unset($_SESSION['cart'][$id]);
        }
    }    
}

 

Give it a try and let me/us know how it works (you might have to modify/tweak it some)!

[ballouta]

I made this change in the code:

 

<input type='checkbox' name='itemid[]' value='$k' />

 

since my code that displays the cart begins with this:

<?php
if (is_array($_SESSION['cart']))
{
    foreach ($_SESSION['cart'] as $k => $v)
    {
        // only display items that have been selected
        // that is, quantities > 0
        if ($v > 0)
        {
//etc...

<input type='checkbox' name='itemid[]' value='$k' />

?>

 

i ticked the check box and pressed remove but still in the cart!

 

kindly help

[The Little Guy]

Use $v instead of $k

 

See what happens...

[ballouta]

still the item in the cart!

[ballouta]

You may begin tracing the problem from here

 

This is my final code in the shopping cart.php form:

 

<?php
//it begins like this and there is no problem in viewing the cart content

if (is_array($_SESSION['cart']))
{
    foreach ($_SESSION['cart'] as $k => $v)
    {
  //$k is the item SKu which is the primary key/ item code

	<input type='submit' name='remove' value='Remove'>
	<input type='hidden' name='re' value='$k' />
//etc...
?>

 

if the above two lines are correct then I still need the loop the removes this item from the cart PLZ

 

Note that the add to cart code is working and it's like this:

<?php
if ($_POST['update'])
{
    foreach ($_POST['qty'] as $k => $v)
    {
        // if the value is empty, 0 or negative
        // don't bother changing the cart
        if ($v != "" && $v >= 0)
        {
            $_SESSION['cart'][$k] = $v;
        }
    }    
}
?>

 

could you please help me

[Silverado_NL]

is your html form ok?

all tags complete and ok? and more important, is the form action target  set to the php script ur working with?

something like

<FORM action="index.php" method="post">

[ballouta]

Hi

 

I do NOT have any problem in my form, what makes sure of that is that the update QTY and Empty Cart buttons are working properly.

 

          <form action='<?=$_SERVER['PHP_SELF']?>' method='post'>

 

Thank you

[Mikedean]

I could be completely wrong with what I assumed you was doing/trying to do, however this code works for me.

 

<?php
session_start();

if ($_POST['update'])
{
	foreach ($_POST['qty'] as $k => $v)
	{
		// if the value is empty, 0 or negative
		// don't bother changing the cart
		if ($v != "" && $v >= 0)
		{
			$_SESSION['cart'][$k] = $v;
		}
	}    
}

//this is the ADD to cart code, no problems
if ($_POST['add'])
{
	foreach ($_POST['qty'] as $k => $v)
	{
		// if the value is 0 or negative
		// don't bother changing the cart
		if ($v > 0)
		{
			//echo "V = $v and K = $k"; V = QTY and K = article
			$_SESSION['cart'][$k] = $_SESSION['cart'][$k] + $v;
		}
	}    
}

if ($_POST['remove'])
{
	for( $i = 0; $i < count( $_POST['qty'] ); $i++ )
	{
		unset( $_SESSION['cart'][$_POST['qty'][$i]] );	
	}
}
?>
<form method="post">
    <input type="text" name="qty[1]" />
    <input type="submit" name="add" value="Add" /> 
</form>

<form method="post">
    <?php
if( isset( $_SESSION['cart'] ) )
	foreach( $_SESSION['cart'] as $k => $v )
		echo "<input type='text' name='qty[" . $k . "]' value='" . $v . "' />";	
?>
    <input type="submit" name="update" value="Update" /> 
</form>

<form method="post">
    <?php
if( isset( $_SESSION['cart'] ) )
	foreach( $_SESSION['cart'] as $k => $v )
		echo "<input type='checkbox' name='qty' value='" . $k . "' />";	
?>
    <input type="submit" name="remove" value="Remove" /> 
</form>