Revonzy Mini Shell

<?php
	require_once("lib/functions.php");	
	$db = new login_function();

	$current_session = session_id(); 
	
	if(isset($_POST['c_id']) AND isset($_POST['actual_price']))
	{
		$c_id			=	$_POST['c_id'];
		$actual_price	=	$_POST['actual_price'];
		$qty			=	$_POST['qnty'];
	
		$actual_price = $actual_price * $qty;
	
		$check_exist = $db->check_product_exist($current_session,$c_id);
	
		if($check_exist=="")
		{
			if($db->add_temp_cart($current_session,$c_id,$qty,$actual_price))
			{
				echo "success";
			}
			else
			{
				echo "failed";
			}
		}
		else
		{
			if($db->update_cart($current_session,$c_id,$qty,$actual_price))
			{
				echo "success";
			}
			else
			{
				echo "failed";
			}
		}
	}

?>