hiii... i m trying to execute shopping cart program in php.
this is my code, where i m getting the error.

Code:
function cart(){
   foreach($_SESSION as $Name => $value) {
     if($value > 0) {
        if(substr($Name, 0, 5)=='cart_') {
            $id = substr($Name, 5, (strlen($Name)-5));
            $get = mysql_query('SELECT id, Name, Price FROM book WHERE id='.$id);
...