added pass mark

app/public/download_table.php

@@ -9,7 +9,8 @@
         $table = $_GET['table'];
     }
 
-    header('Content-type: text/csv');
+    ob_start('ob_gzhandler'); #compressing data which is sent to the browser, the browser will decompress the data automatically
+    header('Content-type: text/csv; charset="UTF-8" ');
     header('Content-Disposition: attachment; filename="table.csv" ');
 
 function download_table($stmt) {

app/scripts/functions.php

@@ -235,6 +235,9 @@ function update_points($con, $s_id) {
     $factor = $results[0]['erg']/ 15.0;
     foreach($results as $row) {
         $points = round($row['erg']/$factor);
+        if ($points == 0 && $row['erg'] != 0) {
+            $points = 1;
+        }
         change_points($con, $row['m_id'], $s_id, $points);
     }
 }