cant delete item from session

Hi…im trying to remove item from session but it doesnt delete!

[code=php]if(isset($_GET[‘action’]))
{
$choice=$_GET[‘action’];

if($choice==’add’)
{
$Pid=$_GET[‘id’];
$_SESSION[‘baseket’][$Pid]++;
header(“Location:mobiles.php”);

}
if($choice==’remove’)
{
$Pid=$_GET[‘id’];
$_SESSION[‘baseket’][$Pid]–;

if(isset($_SESSION[‘basket’][$Pid])<=0)
{
//echo “<script>alert(‘zero items!’);</script>”;
unset($_SESSION[‘basket’][$Pid]);

}

}

if($choice==’empty’)
{

unset($_SESSION[‘baseket’]);
header(“Location:mobiles.php”);

}

}

?>[/code]

?

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