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9 Months Ago
0

how to check if session variable is array

Hello there! I just want to know how to check if session variable is array because thee code that I am trying to work is not working see below :)

 <?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;
?>
3
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8 Months Ago
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weirdCreature7
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9 Months Ago
0

Check also whether it is not empty:

if(is_array($_SESSION['cart']) and !empty($_SESSION['cart']))

or check for elements one level below:

if(is_array($_SESSION['cart'][$i]) and !empty($_SESSION['cart'][$i]))

or check for elements two levels below:

if(isset($_SESSION['cart'][$i]['productid'])) {

    $pid=$_SESSION['cart'][$i]['productid'];

} else {

    echo 'No product ID!';
}
broj1
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9 Months Ago
0

It is still not working and I have this Error. BTW thanks for replying :)

Notice: Undefined variable: i in C:\xampp\htdocs\verifycart.php on line 61

Notice: Undefined index: in C:\xampp\htdocs\verifycart.php on line 61

weirdCreature7
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9 Months Ago
0

whawhat's the code on line 61? show the code block before this line too.

diafol
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9 Months Ago
0

here's the whole code :)

<?php
    //error_reporting(E_ERROR | E_PARSE);
    include("db.php");
    include("functions.php");

    if(isset($_REQUEST['command'])=='delete' && $_REQUEST['pid']>0){
        remove_product($_REQUEST['pid']);
    }
    else if(isset($_REQUEST['command'])=='clear'){
        unset($_SESSION['cart']);
    }
    else if(isset($_REQUEST['command'])=='update'){
        $max=count($_SESSION['cart']);
        for($i=0;$i<$max;$i++){
            $pid=(isset($_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';
            }
        }
    }

?>
<html>
<title>Verify Shopping Cart</title>
<script language="javascript">

    function update_cart(){
        document.form1.command.value='update';
        document.form1.submit();
    }

</script>
</head>
    <body bgcolor = "black" alink="#FFFF00" ><center><br/>
    <form name="form1" method="post">
    <input type="hidden" name="pid" />
    <input type="hidden" name="command"/>

        <br/>
            <b>Your Shopping Cart</b></font><br/><br/>               
            <?php
            if(is_array($_SESSION['cart'][$i]) and !empty($_SESSION['cart'][$i])){
                $max=count($_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;
            ?>

            <font face = "century gothic" color = "#FFFC17" size = "2"/>
            <?php echo $i+1?>: &nbsp;<?php echo $pname?><br/>
            Price:&nbsp;Php <?php echo get_price($pid)?><br/>
            Qty:&nbsp;<input type="text" name="product<?php echo $pid?>" value="<?php echo $q?>" maxlength="3" size="2" /><br/>                   
            Amount:&nbsp;Php <?php echo get_price($pid)* $q?>&nbsp;<br/>
            <a href="javascript:del(<?php echo $pid?>)">Remove</a><br/><br/>
            <hr color="#FFFF00" size="1"/>
             <?php                   
                }
            ?>
            <font face = "century gothic" color = "#FFFC17" size = "3"/>
            <b>Cart Subtotal: Php <?php echo get_order_total()?></b><br/><br/>
            <input type="button" value="Clear Cart" onclick="clear_cart()">&nbsp;
            <input type="button" value="Update Cart" onclick="update_cart()">&nbsp;<br/>
            <input type="button" value="Place Order >>" onclick="window.location='toa.php'">

            <?php
            }
            else{
                echo "<font color='#FF0000'>There are no items in your shopping cart!</font>";
            }
        ?>
        </form>
        </font>
    </body>
</html>
weirdCreature7
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9 Months Ago
0

this is the line 61 :)

if(is_array($_SESSION['cart'][$i]) and !empty($_SESSION['cart'][$i]))
weirdCreature7
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9 Months Ago
Show Comments
2

Your test should be within a loop where $i is defined:

for($i=0;$i<$max;$i++)

Otherwise you can not test for $_SESSION['cart'][$i]

broj1
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1,212 posts since Jan 2011
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9 Months Ago
0

BTW the button update cart is not working :( and the one I am trying to fix! thanks:)

weirdCreature7
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9 Months Ago
Show Comments
1

why use js for hidden field. just use multiple submit buttons with unique name attributes

diafol
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9 Months Ago
0

Can you post the contents of the $_SESSION['cart'] before updating? Put this code between lines 12 and 13:

die(print_r($_SESSION['cart'], 1));
broj1
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9 Months Ago
0

Thank you, but this part of my code is not yet working. Please help me find what is wrong with it and how to correct it so my 'update cart' may work already. Please help me!!! Thanks. :(

 else if(isset($_REQUEST['command'])=='update'){
        $max=count($_SESSION['cart']);
        for($i=0;$i<$max;$i++){
            $pid=(isset($_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';
            }
        }
    }
weirdCreature7
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16 posts since Jul 2012
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9 Months Ago
Show Comments
2

OK, but as I stated in my previous post please send the contents of the $_SESSION before the for loop (see above). Even better if you send the contents of the $_SESSION both before and after the foor loop so we can compare. Use the following code:

else if(isset($_REQUEST['command'])=='update'){

    // this will display the contents of the $_SESSION['cart'] before the update
    print_r($_SESSION['cart']);

    $max=count($_SESSION['cart']);
    for($i=0;$i<$max;$i++){
        $pid=(isset($_SESSION['cart'][$i]['productid']));
        $q=intval($_REQUEST['product'.$pid]);
        if($q>0 && $q<=999){
        $_SESSION['cart'][$i]['qty'] = $q;
    }

    // this will display the contents of the $_SESSION['cart'] after the update
    // and end the script
    die(print_r($_SESSION['cart'], 1));

    else{
        $msg='Some proudcts not updated!, quantity must be a number between 1 and 999';
    }
}
broj1
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1,212 posts since Jan 2011
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8 Months Ago
1

RE: help on multiple submits...

<form ...>
...other form fields...
<input type="submit" name="insert" value="Update" />
<input type="submit" name="delete" value="Delete" />
<input type="submit" name="order" value="Order" />
</form>

This form sent to a formhandler page, then the action is determined by the submit button used:

if($_POST){
    switch(true){
        case isset($_POST['insert']):
            //do whatever
            break;
        case isset($_POST['update']):
            //do whatever
            break;
        case isset($_POST['order']):
            //do whatever
            break;
        default:
            //error
            break;
    }
}

Or something like that.

diafol
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