Please help me in my Shopping Cart

Bhame · March 8, 2013

Notice: Undefined index: command in D:\xampp\htdocs\cart\products.php on line 5

<?php
include("includes/db.php");
include("includes/functions.php");

if($_REQUEST['command']=='add' && $_REQUEST['productid']>0){ <<Error
$pid=$_REQUEST['productid'];
addtocart($pid,1);
header("location:shoppingcart.php");
exit();
}

?>

Notice: Undefined index: command in D:\xampp\htdocs\cart\shoppingcart.php on line 5

Notice: Undefined index: command in D:\xampp\htdocs\cart\shoppingcart.php on line 8

Notice: Undefined index: command in D:\xampp\htdocs\cart\shoppingcart.php on line 11

<?php
include("includes/db.php");
include("includes/functions.php");

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

?>

gizmola · March 8, 2013

A notice is not an error. It is a warning. Notices are typically used during development to help perfect code by pointing out non-fatal issues like the ones in this script.

The notices you are receiving can be avoided using isset, but it is not unusual for scripts to do the types of comparisons that are producing the notices you show. Those comparisons will still work properly because they will evaluate to false, even though the variables in the comparison do not actually exist if rhw url parameters are not passed into the $_GET or $_REQUEST.

You can turn off the display of notices by changing that setting in the php.ini, or in the script you can turn down the level or reporting using:

error_reporting(E_ALL ^ E_NOTICE);

Bhame · March 8, 2013

sir? how can i turn off the display error? i can't find the php.ini only i can see is "php.ini-development" , "php.ini-production". can you give me the exact direction to fixed it? plzzzz?

mostafatalebi · March 8, 2013

Hey buddy just add one line on top of your line, below session_start(); in your case just go to topmost, since you do not have session_start()

error_reporting(E_ERROR | E_WARNING | E_PARSE);

if you change E_WARNING to E_NOTICE or add E_NOTICE then you will receive Notices.

Edited March 8, 2013 by mostafatalebi

gizmola · March 8, 2013

Create a script in your webroot that has this simple code:

Point your browser to that page, and it will show you lots of information about your php setup including the location of the ini files.

NuneRex · March 27, 2013

Hello. I have the same issue as stated above, but my question is how do I correct the issue? I do not want to cover it up or hide it, I want to fix it.

Looking at the code that I being used, for I did not write it, but am using is from a tutorial:

// This is placed after the session_start();

if($_REQUEST['command']=='clear'){

unset($_SESSION['cart']);

//This is placed in the <head>

function clear_cart(){

if(confirm('This will empty your shopping cart, continue?')){

document.form1.command.value='clear';

document.form1.submit();

}

//And this is used at the bottom of the form

What am I missing, why do I still get the error:

Notice: Undefined index: command in /var/www/html/TestFolder/functions_ordering.php on line 5

Thank you and have a great day!

PaulRyan · March 27, 2013

if(isset($_REQUEST['command']) && $_REQUEST['command'] == 'clear'){

NuneRex · March 28, 2013

Hello PaulRyan,

I thank you for your response.

I have tried isset and the notice does clear however the only thing that happens now is the popup window and then nothing.

I expected the next page to show up and the form to clear but it does not.

//Beginning of page

<?php

//Start the session

session_start();

if(isset($_REQUEST['command']) && $_REQUEST['command'] == 'clear'){

unset($_SESSION['cart']);

header("location:product_page.php");

}

?>

//Head of HTML

function clear_order(){

if(confirm('This will empty your shopping cart, continue?')){

document.submit_order.command.value='clear';

document.submit_order.submit();

}

</script>

//Button in bottom of form

Is there anything else that I am doing wrong?

Thank you for your time and assistance.

PaulRyan · March 28, 2013

Use exit after your header redirect line.

NuneRex · March 28, 2013

Hello Paul,

I placed it here as I understood you, with out any change. The page stays with the information still on the page and does not redirect.

//Beginning of page

<?php

//Start the session

session_start();

if(isset($_REQUEST['command']) && $_REQUEST['command'] == 'clear'){

unset($_SESSION['cart']);

header("location:product_page.php");

exit();

}

?>

PaulRyan · March 28, 2013

Well then the if statement isn't firing. Make sure the variable you are checking is exactly what you're after, use var_dump after the session start function.

  var_dump($_REQUEST['command']);

Edited March 28, 2013 by PaulRyan

NuneRex · March 28, 2013

That is what I was thinking, but I keep getting the popup message after I click on the (CLEAR Order) button and then nothing.

Here is what I typed as I understood you.

//Beginning of page

<?php

//Start the session

session_start();

var_dump($_REQUEST['command']);

if(isset($_REQUEST['command']) && $_REQUEST['command'] == 'clear'){

unset($_SESSION['cart]);

header("location:product_page.php");

exit();

}

?>

The response I got was:

Notice: Undefined index: command in /var/www/... on line 4.

NULL

So it looks like the same issue I had before, except this time it tells me NULL.

NuneRex · March 28, 2013

Any other ideas?

Thank you very much for your efforts.

PaulRyan · March 28, 2013

That means that the $_REQUEST['command'] is not being sent to the page as expected.

Which page is sending the "command"? Because there is some error on that page that isn't sending the data as it should.

NuneRex · March 28, 2013

This is the page that is sending the command from the form button at the bottom.

<?php

//ordering.php page2

//Start the session

session_start();

var_dump($_REQUEST['command']);

if(isset($_REQUEST['command']) && $_REQUEST['command'] == 'clear'){

unset($_SESSION['cart']);

header("location:product_page.php");

exit();

}

?>

<!DOCTYPE html

PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

function getOrderTotal() {

var icost = document.product_form.unitCost1.value;

var iqty = document.product_form.qty1.value;

var recurrency = '^[0-9]{1,5}\.[0-9]{2}$';

var reitems = '^([1-9])([0-9]{0,2})$';

if(!icost.match(recurrency)) {

alert('Please provide an item cost in 0.00 format!');

}

else if(!iqty.match(reitems)) {

alert('Please provide a quantity of 1 to 999!');

}

else {

var itotal = (icost * iqty);

itotal *= 100;

itotal = Math.ceil(itotal);

itotal /= 100;

if(itotal.toFixed) {

itotal = itotal.toFixed(2);

}

document.getElementById('totalCost1').value = itotal;

}

</script>

<head>

<title>Order Form</title>

function clear_order(){

if(confirm('This will empty your shopping cart, continue?')){

document.subtm_order.command.value='clear';

document.subtm_order.submit();

}

</script>

</head>

<h1 align="center">Order Form</h1>

<?php

date_default_timezone_set('America/Los_Angeles');

$ord_date=date('M j, Y H:i');

//If we have previously initiated a session in order_product.php, the shopping cart is

//defined as an associative array, $_SESSION['cart'].

//We first need to check if the $_SESSION['cart'] variable has been defined, as it

//won't be if the user has come straight to this page.

//Top of the order form information

echo '<div align="center"><form name="subtm_order" method="post">

<tbody>

<thead><tr><th>Requesting Facility<br>

<th>Requester Name<br>

<th>Today\'s Date<br>

<input align="center" type="text" name="ord_date"

value="'.$ord_date.'" readonly="readonly" size="14"></th></tr>

</thead>

</tbody>

</table>';

//We also need to check if there are currently any items in the shopping cart.

if (!isset($_SESSION['cart']) || (count($_SESSION['cart']) == 0)) {

echo '<p>Your order form is woefully empty!</p>';

} else {

echo '<table border="1" cellpadding="5px" cellspacing="1px" style="font-family:Veranda, Geneva, sans-serif; font-size:11px; background-color:#E1E1E1">

<th>Description</th>

<th>Part Number</th>

<th><div title="AC-1, AC-2, COAET, etc.">Location where <br>item is used</div></th>

<th>Rack or<br>Machine Info</th>

<th>Function performed<br>by Hardware</th>

<th>Total Cost</th>

<th>Sources / Links <br>Please paste below</th></tr>';

$total = 0;

$i=1;

//We iterate over all the items in $_SESSION['cart'].

//Each item represents a "row," or a single product to buy, in the shopping cart.

foreach($_SESSION['cart'] as $item) {

//Recall that the format of the $item associative array is the same as the one

//defined in add.php, since the array has simply been passed to this page

//via the $_SESSION variable.

echo "<tr bgcolor=\"#FFFFFF\" style=\"font-weight:bold\">

<td>\${$item['unitCost']}</td>

<td>{$item['partNo']}</td>

<td>{$item['location']}</td>

<td>{$item['rackUnit']}</td>

<td>{$item['hdwrFunct']}</td>

<td>$".number_format(($item['unitCost'] * $item['ord_qty']),2)."</td>

<td>{$item['supplierUrl']}</td>

</tr>";

$i++;

$total += ($item['unitCost'] * $item['ord_qty']);

};

}

?>

<tr><td colspan="3"><b><strong>Grand total: </strong>$<?php echo number_format($total,2)?></b></td>

</table></form></div>

</body>

</html>

NuneRex · March 28, 2013

There are two other buttons that allow it the user to continue ordering items and a button that is not implemented yet to submit the order. The $_REQUEST comes from the same page that I am ordering on. If that is not allowed please let me know and I will place it onto a separate page.

PaulRyan · March 28, 2013

You don't have an input in your form with the name "command" you need to add one in.

<input type="text" name="command">

Edit - Please use the code tags in future to show code.

Edited March 28, 2013 by PaulRyan

NuneRex · March 28, 2013

My apologies, I will find the code tags.

Thank you very much you were correct that solved my problem. The redirect works, the values are cleared and the page is ready for reuse!

Once again, many thanks! xD

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