products not getting added to cart whats wrong anyone?

lovephp · February 2, 2016

mates all seems to be ok just that when i click add to cart nothing is getting added here

products.php

<?php
    include("includes/db.php");
    include("includes/functions.php");
    
    if($_REQUEST['command']=='add' && $_REQUEST['productid']>0){
        $pid=$_REQUEST['productid'];
        addtocart($pid,1);
        header("location:shoppingcart.php");
        exit();
    }
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Products</title>
<script language="javascript">
    function addtocart(pid){
        document.form1.productid.value=pid;
        document.form1.command.value='add';
        document.form1.submit();
    }
</script>
</head>


<body>
<form name="form1">
    <input type="hidden" name="productid" />
    <input type="hidden" name="command" />
</form>
<div align="center">
    <h1 align="center">Products</h1>
    <table border="0" cellpadding="2px" width="600px">
        <?php
            $result=mysql_query("select * from products");
            while($row=mysql_fetch_array($result)){
        ?>
        <tr>
            <td><img src="<?php echo $row['picture']; ?>" /></td>
            <td>       <b><?php echo $row['name']; ?></b><br />
                    <?php echo $row['description']; ?><br />
                    Price:<big style="color:green">
                        $<?php echo $row['price']; ?></big><br /><br />
                    <input type="button" value="Add to Cart" onclick="addtocart(<?php echo $row['serial']; ?>)" />
            </td>
        </tr>
        <tr><td colspan="2"><hr size="1" /></td>
        <?php } ?>
    </table>
</div>
</body>
</html>

shoppingcart.php

<?php
    include("includes/db.php");
    include("includes/functions.php");
    echo print_r($_SESSION);
    if($_REQUEST['command']=='delete' && $_REQUEST['pid']>0){
        remove_product($_REQUEST['pid']);
    }
    else if($_REQUEST['command']=='clear'){
        unset($_SESSION['cart']);
    }
    else if($_REQUEST['command']=='update'){
        $max=count($_SESSION['cart']);
        for($i=0;$i<$max;$i++){
            $pid=$_SESSION['cart'][$i]['productid'];
            $q=intval($_REQUEST['product'.$pid]);
            if($q>0 && $q<=999){
                $_SESSION['cart'][$i]['qty']=$q;
            }
            else{
                $msg='Some proudcts not updated!, quantity must be a number between 1 and 999';
            }
        }
    }

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Shopping Cart</title>
<script language="javascript">
    function del(pid){
        if(confirm('Do you really mean to delete this item')){
            document.form1.pid.value=pid;
            document.form1.command.value='delete';
            document.form1.submit();
        }
    }
    function clear_cart(){
        if(confirm('This will empty your shopping cart, continue?')){
            document.form1.command.value='clear';
            document.form1.submit();
        }
    }
    function update_cart(){
        document.form1.command.value='update';
        document.form1.submit();
    }


</script>
</head>

<body>
<form name="form1" method="post">
<input type="hidden" name="pid" />
<input type="hidden" name="command" />
    <div style="margin:0px auto; width:600px;" >
    <div style="padding-bottom:10px">
        <h1 align="center">Your Shopping Cart</h1>
    <input type="button" value="Continue Shopping" onclick="window.location='products.php'" />
    </div>
        <div style="color:#F00"><?php echo $msg; ?></div>
        <table border="0" cellpadding="5px" cellspacing="1px" style="font-family:Verdana, Geneva, sans-serif; font-size:11px; background-color:#E1E1E1" width="100%">
        <?php
            if(is_array($_SESSION['cart'])){
                echo '<tr bgcolor="#FFFFFF" style="font-weight:bold"><td>Serial</td><td>Name</td><td>Price</td><td>Qty</td><td>Amount</td><td>Options</td></tr>';
                $max=count($_SESSION['cart']);
                for($i=0;$i<$max;$i++){
                    $pid=$_SESSION['cart'][$i]['productid'];
                    $q=$_SESSION['cart'][$i]['qty'];
                    $pname=get_product_name($pid);
                    if($q==0) continue;
            ?>
                    <tr bgcolor="#FFFFFF"><td><?php echo $i+1; ?></td><td><?php echo $pname; ?></td>
                    <td>$ <?php echo get_price($pid); ?></td>
                    <td><input type="text" name="product<?php echo $pid; ?>" value="<?php echo $q; ?>" maxlength="3" size="2" /></td>                    
                    <td>$ <?php echo get_price($pid)*$q; ?></td>
                    <td><a href="javascript:del(<?php echo $pid; ?>)">Remove</a></td></tr>
            <?php                    
                }
            ?>
                <tr><td><b>Order Total: $<?php echo get_order_total(); ?></b></td><td colspan="5" align="right"><input type="button" value="Clear Cart" onclick="clear_cart()"><input type="button" value="Update Cart" onclick="update_cart()"><input type="button" value="Place Order" onclick="window.location='billing.php'"></td></tr>
            <?php
            }
            else{
                echo "<tr bgColor='#FFFFFF'><td>There are no items in your shopping cart!</td>";
            }
        ?>
        </table>
    </div>
</form>
</body>
</html>

includes/functions.php

<?php

    function get_product_name($pid){
        $result=mysql_query("select name from products where serial=$pid");
        $row=mysql_fetch_array($result);
        return $row['name'];
    }
    function get_price($pid){
        $result=mysql_query("select price from products where serial=$pid");
        $row=mysql_fetch_array($result);
        return $row['price'];
    }
    function remove_product($pid){
        $pid=intval($pid);
        $max=count($_SESSION['cart']);
        for($i=0;$i<$max;$i++){
            if($pid==$_SESSION['cart'][$i]['productid']){
                unset($_SESSION['cart'][$i]);
                break;
            }
        }
        $_SESSION['cart']=array_values($_SESSION['cart']);
    }
    function get_order_total(){
        $max=count($_SESSION['cart']);
        $sum=0;
        for($i=0;$i<$max;$i++){
            $pid=$_SESSION['cart'][$i]['productid'];
            $q=$_SESSION['cart'][$i]['qty'];
            $price=get_price($pid);
            $sum+=$price*$q;
        }
        return $sum;
    }
    function addtocart($pid,$q){
        if($pid<1 or $q<1) return;
        
        if(is_array($_SESSION['cart'])){
            if(product_exists($pid)) return;
            $max=count($_SESSION['cart']);
            $_SESSION['cart'][$max]['productid']=$pid;
            $_SESSION['cart'][$max]['qty']=$q;
        }
        else{
            $_SESSION['cart']=array();
            $_SESSION['cart'][0]['productid']=$pid;
            $_SESSION['cart'][0]['qty']=$q;
        }
    }
    function product_exists($pid){
        $pid=intval($pid);
        $max=count($_SESSION['cart']);
        $flag=0;
        for($i=0;$i<$max;$i++){
            if($pid==$_SESSION['cart'][$i]['productid']){
                $flag=1;
                break;
            }
        }
        return $flag;
    }

?>

anyone can figure out whats wrong?

lovephp · February 2, 2016

hahaha sorry i i forgot to start session

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products not getting added to cart whats wrong anyone?

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