]Notice: Trying to get property of non-object in

[Docie]

Hello mates i have a new problem in my project for an e-shop.
The message i get is:

Notice: Trying to get property of non-object in C:\Program Files\EasyPHP 2.0b1\www\eshop\order_fns.php on line 40
Could not store data, please try again.

I try to store data in a table if the content is the same of the one i insert in the text box with the php script, else it inserts a new customer and a new order (this two functions work perfectly) but i get this error message and the site doesn't continues. I checked the database and the table and the other files but all seem ok. The problem is in this line... Please help!!!

function insert_order($order_details)
{
  // extract order_details out as variables
  extract($order_details);

  // set shipping address same as address
  if(!$ship_name&&!$ship_address&&!$ship_city&&!$ship_state&&!$ship_zip&&!$ship_country)
  {
    $ship_name = $name;
    $ship_address = $address;
    $ship_city = $city;
    $ship_state = $state;
    $ship_zip = $zip;
    $ship_country = $country;
  }

  $conn =  new mysqli('localhost','root','','ekloges');

 if (mysqli_connect_errno())
{
	echo ' Error no connection';
	exit;
}
  // insert customer address
  $query =  "select costumerid from customers where  

            name = '$name' and address = '$address' 
            and city = '$city' and state = '$state' 
            and zip = '$zip' and country = '$country' ";
[B]  $result = $conn->query($query);[/B]
  if($result->num_rows>0)
  {
    $customer = $result->fetch_object();
    $customerid = $customer->customerid;
  }
  else
  {
    $query = "insert into customers values
            ('', '$name','$address','$city','$state','$zip','$country')";
    $result = $conn->query($query);
    if (!$result)
       return false;
  }
  $customerid = $conn->insert_id;

  $date = date('Y-m-d');
  $query = "insert into orders values
            ('', $customerid, ".$_SESSION['total_price'].", '$date', 'PARTIAL', '$ship_name',
             '$ship_address','$ship_city','$ship_state','$ship_zip',
              '$ship_country')";

  $result = $conn->query($query);
  if (!$result)
    return false;

  $query = "select orderid from orders where 
               customerid = $customerid and 
               amount > ".$_SESSION['total_price']."-.001 and
               amount < ".$_SESSION['total_price']."+.001 and
               date = '$date' and
               order_status = 'PARTIAL' and
               ship_name = '$ship_name' and
               ship_address = '$ship_address' and
               ship_city = '$ship_city' and
               ship_state = '$ship_state' and
               ship_zip = '$ship_zip' and
               ship_country = '$ship_country'";
  $result = $conn->query($query);
  if($result->num_rows>0)
  {
    $order = $result->fetch_object();
    $orderid = $order->orderid;
  }
  else
    return false; 

  // insert each book
  foreach($_SESSION['cart'] as $isbn => $quantity)
  {
    $detail = get_book_details($isbn);
    $query = "delete from order_items where  

              orderid = '$orderid' and isbn =  '$isbn'";
    $result = $conn->query($query);
    $query = "insert into order_items values
              ('$orderid', '$isbn', ".$detail['price'].", $quantity)";
    $result = $conn->query($query);
    if(!$result)
      return false;
  }

  return $orderid;
}

?>

[halojoy]

Such an error is typical
when there was a ->query failure, error
and so the $result it not really a good result

For MySQLi is easy to make a control with error message.
Then if people always put this AFTER each QUERY
they will know what is the problem.

	// TEST after all mysqli->query()
	if( $mysqli->error ) exit( $mysqli->error );

$mysqli->error
is a message telling what was trouble.
If no error, then $mysql->error is empty string.
http://www.php.net/manual/en/mysqli.error.php

I would try run this:

<?php

function insert_order($order_details)
{
  // extract order_details out as variables
  extract($order_details);

  // set shipping address same as address
  if(!$ship_name&&!$ship_address&&!$ship_city&&!$ship_state&&!$ship_zip&&!$ship_country)
  {
    $ship_name = $name;
    $ship_address = $address;
    $ship_city = $city;
    $ship_state = $state;
    $ship_zip = $zip;
    $ship_country = $country;
  }

  $conn =  new mysqli('localhost','root','','ekloges');

 if (mysqli_connect_errno())
{
	echo ' Error no connection';
	exit;
}
  // insert customer address
  $query =  "select costumerid from customers where  

            name = '$name' and address = '$address' 
            and city = '$city' and state = '$state' 
            and zip = '$zip' and country = '$country' ";
  $result = $conn->query($query);

// TEST when $result===false
if($conn->error) exit($conn->error);

  if($result->num_rows>0)
  {
    $customer = $result->fetch_object();
    $customerid = $customer->customerid;
  }
  else
  {
    $query = "insert into customers values
            ('', '$name','$address','$city','$state','$zip','$country')";
    $result = $conn->query($query);

// TEST when $result===false
if($conn->error) exit($conn->error);

if (!$result)
   return false;
  }
  $customerid = $conn->insert_id;

  $date = date('Y-m-d');
  $query = "insert into orders values
            ('', $customerid, ".$_SESSION['total_price'].", '$date', 'PARTIAL', '$ship_name',
             '$ship_address','$ship_city','$ship_state','$ship_zip',
              '$ship_country')";

  $result = $conn->query($query);

// TEST when $result===false
if($conn->error) exit($conn->error);

  if (!$result)
    return false;

  $query = "select orderid from orders where 
               customerid = $customerid and 
               amount > ".$_SESSION['total_price']."-.001 and
               amount < ".$_SESSION['total_price']."+.001 and
               date = '$date' and
               order_status = 'PARTIAL' and
               ship_name = '$ship_name' and
               ship_address = '$ship_address' and
               ship_city = '$ship_city' and
               ship_state = '$ship_state' and
               ship_zip = '$ship_zip' and
               ship_country = '$ship_country'";
  $result = $conn->query($query);

// TEST when $result===false
if($conn->error) exit($conn->error);

  if($result->num_rows>0)
  {
    $order = $result->fetch_object();
    $orderid = $order->orderid;
  }
  else
    return false; 

  // insert each book
  foreach($_SESSION['cart'] as $isbn => $quantity)
  {
    $detail = get_book_details($isbn);
    $query = "delete from order_items where  

              orderid = '$orderid' and isbn =  '$isbn'";
    $result = $conn->query($query);

// TEST when $result===false
if($conn->error) exit($conn->error);

$query = "insert into order_items values
          ('$orderid', '$isbn', ".$detail['price'].", $quantity)";
$result = $conn->query($query);

// TEST when $result===false
if($conn->error) exit($conn->error);

if(!$result)
  return false;
  }

  return $orderid;
}

?>

[Docie]

The message i got is: Unknown column 'customerid' in 'field list'
I wrote it like this : 'costumer' instead of customer and the message is:
Could not store data, please try again.

What is the problem???

[Docie]

And the new message is :
Cannot add or update a child row: a foreign key constraint fails (eshop/customers, CONSTRAINT customers_ibfk_1 FOREIGN KEY (costumerid) REFERENCES customers (costumerid) ON DELETE CASCADE ON UPDATE CASCADE)
The foreign key seems to be ok in my database...
Any suggestions?

[Docie]

Ok it worked after i deleted all indexes and did it again... strange but worked...
I have a new problem... what means this?
Column count doesn't match value count at row 1

<html>
<head></head>
<title>Roads Bookstore Entry Results</head>

<body>
<h1>Roads Bookstore Entry Results</h1>
<?php
$isbn=$_POST["isbn"];
$author=$_POST["author"];
$title=$_POST["title"];
$price=$_POST["price"];


if (!$isbn || !$author || !$title || !$price)
{
	echo "Not Required details.<br>
	     Please go back and try again.";
	exit;
}

if (!get_magic_quotes_gpc())
{
	$isbn = addslashes($isbn);
	$author = addslashes($author);
	$title = addslashes($title);
	$price = addslashes($price);

}

$db = new mysqli('localhost','root','','eshop');

if (mysqli_connect_errno())
{
	echo "Error:No Access to Database. Try again later.";
	exit;
}

$query = "insert into books values
	 ('".$isbn."','".$title."','".$author."','".$price."')";
$result = $db->query($query);
 if($db->error) exit($db->error); 
if ($result)
	echo $db->affected_rows." book inserted into database.";


$db->close();

?>
</body>
</html>