shorten csv file name

html/timesheet.html

             <div class='wifi'>
                 <i class="ticon  ticon-times"></i>
             </div>
-            <a id='ndiscsv' href="/ndiscsv/" target="_blank">
+            <a id='ndiscsv' href="/xeroc/#1568049914546-bc20bf7d-07c3" target="_blank">
             <div class='csv'>
                 <i class="ticon  ticon-times"></i>
             </div>

ts.php

         $clients= $_POST['clients'];
         $start = $_POST['start'];;
         $finish = $_POST['finish'];;
-        $filename="{$start}___{$finish}.csv";
+        $filename="n" . time() . ".csv";
         
         header("Expires: 0");
         header("Cache-Control: no-cache, no-store, must-revalidate");