updating array problem

[Lassie]

I am trying to update an array which holds a list of property ids as a browse list.The list is then viewed.

I pass the required property_id as a Get and attempt to add to a session array.

I get an undefined variable error.

Can anyone help please.

session_start();
  

  @ $property_id = $_GET['property_id'];
  	echo $property_id;
  
  
  		if($property_id)
  {
    //new item selected
    	if(!isset($_SESSION['browse']))
    {
      	$_SESSION['browse'] = array();
      
    }
    
    $_SESSION['browse']='$product_id';
}
if($_SESSION['browse']&&array_count_values($_SESSION['browse']))

    display_browse($_SESSION['browse']);
  else
  {
    echo '<p>There are no properties in your browse list</p>';
    echo '<hr />';
  }