X-Git-Url: https://git.treefish.org/banana.git/blobdiff_plain/fcea930220d4896e30baa93ee1603b08df1ff4d7..10fa45cd744a59490f4a7e4cb047589d9a8314c0:/admin/summary.php

diff --git a/admin/summary.php b/admin/summary.php
index 68c026f..b467157 100644
--- a/admin/summary.php
+++ b/admin/summary.php
@@ -16,9 +16,11 @@
   print "<table>";
   print "<td><b>First name&nbsp;</b></td><td><b>Last name&nbsp;</b></td><td><b>Matr.nummer&nbsp;</b></td><td><b>Examples&nbsp;</b></td><td><b>Blackboard&nbsp;</b></td>";
   while ($student = $result->fetch(PDO::FETCH_ASSOC)) {
-    $exdone = $db->query("SELECT manydone FROM workdone WHERE mnumber=" . $student['mnumber'])->fetch(PDO::FETCH_NUM);
     $totexdone = 0;
-    foreach($exdone as $subdone) { $totexdone += $subdone; }
+    if( $db->query("SELECT COUNT(*) FROM workdone WHERE mnumber=" . $student['mnumber'])->fetch(PDO::FETCH_NUM)[0] > 0 ) {
+      $exdone = $db->query("SELECT manydone FROM workdone WHERE mnumber=" . $student['mnumber'])->fetch(PDO::FETCH_NUM);
+      foreach($exdone as $subdone) { $totexdone += $subdone; }
+    }
     print "<tr>";
     print "<td>" . $student['firstname'] . "</td>";
     print "<td>" . $student['lastname'] . "</td>";