Extend given PHP script with a grouping feature, FPDF and a new CSS

I need an extension to a given PHP Script to generate full featured HTML-Tables ( Data Grid ) from a MySQL Source. This is the script : [login to view URL] You can use this sript or you can create a new one, with all the functions of the script. Extensions to the script : 1. I need the possibility to add a sum (not a MYSQL SUM) to each column. Example to integrate could be $params['summedCols'][] = 'firstcol'; $params['summedCols'][] = 'secondcol'; For each of this Columns i need a line at the end of the table with the summed amount of this record. 2. I need a grouping feature, so i can create a grouped output with subtotals Example to integrate could be $params['groupedCols'][] = 'firstcol'; $params['groupedCols'][] = 'secondcol'; For each of this cols i need a a new line at the table with subtotal of the summed cols if the group is changed. 3. I need the possibility to output this as an FPDF report. Paging must be inlcuded ( 'letter' and 'A4' ). Paging means that i need the Header and the Columns-Header on each new page and a line with the page number. Attached you'll find a small PDF fill with some examples what sum and group mean. This is only an example !! 4. I need a new CSS template so the tables looks like from here : [login to view URL] As an Option !! Create a new script that will work as the given mysql table sript but output's the data as a WP_List_Table object. ( with integrated FDPF output ). If you choose this option there is no new CSS needed. The default Wordpress CSS must be used. You have to work at your own server. I need this in about 24 hours. The script must work with worpdress. The scipt must work with PHP 5 and 7. If you create a new script please use MYSQLI or PDO