Chart Script in PHP

Hello, we need a Sales Chart and a Price Chart from all Orders. We offer the Database with 3 different Tables 1. Orders 2. Order_products 3. Orders_products_attributes Now we need a script which is able to show us the sales in a timerange and the average price of this product in the price range We should specified the Timerange and the Step range For example: From 01.01.2016 To 31.01.2016 step 7days (means one step is 7 days. - means we have 5 points in the chart) or For example: From 01.01.2016 To 31.12.2016 step months (means one step is 1 monath. - means we have 12 points in the chart) Further more we must filter the results by Product Name, Product Size, Product Models, Products IDs Further More we must compare different filters within the timerange Filter1: ProductID=1001 Filter2: ProductID=1009 So we can see in one chart the differences between each products in the timerange We only need the script, no login or something like this The Script must also work with variables Means, we can call the script $start = "01.01.2016"; $end = "31.01.2017"; $step = "7days"; $p_name[]="New"; $p_size[]="M"; $p_name[]="New"; $p_size[]="L"; $p_name[]="New"; $p_size[]="XL"; or like this: $start = "01.01.2016"; $end = "31.12.2016"; $step = "months"; $p_models[]="13755-V-GR-8NIX-579D"; $p_models[]="13755-V-6X-C1QQ-WT7P";