我如何在codeigniter中选择excel表的指定选定行

Question

函数conv（）     {

    define('CSV_PATH','./uploads/');    #make a folder "csvfile" in your project root 
       $filename='./uploads/'.
       $csv_file = CSV_PATH ."ww.xls"; // Name of your CSV file
        $fp= fopen($csv_file, 'r');

我想要excel sheet.please help

中的第19-22行和第A-H列