PHP Forum

**stevej** · 05-27-2009, 09:29 PM

Hey all, right now I'm having some problems combining sessions and the simplexml_load_file function. The error I get?

Warning: session_start() [function.session-start]: Node no longer exists in myLocation on line 1

I Googled it, and found that it's a fairly well-known problem/bug. Apparently sessions don't like storing XML information. Lots of people have their own fixes, but I can't get anything to work. Here's the code I'm using:

PHP Code:


			
$filename = 'products.xml';
$xmlstr = file_get_contents($filename);
$xml_data = simplexml_load_string($xmlstr);

$products = array();
$_SESSION['cart'] = array();

foreach ($xml_data->product as $product) {
    $id = $product->id;
    $name = $product->name;
    $description = $product->description;
    $image = $product->image;
    $price = $product->price;

    $status = "";

    if($_POST['cart'.$id]) {
        $status = "Product added";
        
        array_push($_SESSION['cart'],$id);
    }

    $products[] = "
    <div class='product'>
    <h5>".$id."</h5>
    <h3>".$name."</h3>
    <p>".$description."</p>
    <p>".$image."</p>
    <h4>".$price."</h4>
    <form action='?' method='POST'>
    <input type='submit' value='Add to cart' name='cart".$id."' />
    </form>
    ".$status."
    </div>";
}  

foreach($products as $content) {
    echo $content;
}
foreach($_SESSION['cart'] as $sessions) {
    echo $sessions;
}

And, of course, I have a session_start() at the beginning of the page before the <html> tag. Do you have any fix that would work with this code?

Thanks.

**stevej** · 05-28-2009, 11:20 AM

Well guys, never mind. I did a little more research, a little more tinkering with the code, and I finally got it to work. The error still displays, but @session_start fixed that. I also had to cast the session as a string. Here's my code:

PHP Code:


			
$xml_data = simplexml_load_file('products.xml');

$products = array();

if(!isset($_SESSION['cart'])){
    $_SESSION['cart'] = array();
} 

foreach ($xml_data->product as $product) {
    $id = $product->id;
    $name = $product->name;
    $description = $product->description;
    $image = $product->image;
    $price = $product->price;

    $status = "";

    if($_POST['cart'.$id]) {
        $status = "Product added";
        $_SESSION['cart'][] = (string)$id;
    }

    $products[] = "
    <div class='product'>
    <h5>".$id."</h5>
    <h3>".$name."</h3>
    <p>".$description."</p>
    <p>".$image."</p>
    <h4>".$price."</h4>
    <form action='?' method='POST'>
    <input type='submit' value='Add to cart' name='cart".$id."' />
    </form>
    ".$status."
    </div>";
}  

foreach($products as $content) {
    echo $content;
}
foreach($_SESSION['cart'] as $sessions) {
    echo $sessions;
}

BTW, thanks for all the help guys!