Allow multiple teachers when importing csv see BT#6449

main/cron/import_csv.php

@@ -212,9 +212,15 @@ class ImportCsv
 
         $row['teachers'] = array();
         if (isset($row['Teacher']) && !empty($row['Teacher'])) {
-            $userInfo = api_get_user_info_from_username($row['Teacher']);
+            $teachers = explode(',', $row['Teacher']);
+            if (!empty($teachers)) {
+                foreach ($teachers as $teacherUserName) {
+                    $teacherUserName = trim($teacherUserName);
+                    $userInfo = api_get_user_info_from_username($teacherUserName);
                     if (!empty($userInfo)) {
-                $row['teachers'] = $userInfo['user_id'];
+                        $row['teachers'][] = $userInfo['user_id'];
+                    }
+                }
             }
         }
 
@@ -658,13 +664,13 @@ if (!is_array($emails)) {
 }
 $subject = "Cron main/cron/import_csv.php ".date('Y-m-d h:i:s');
 $from = api_get_setting('emailAdministrator');
-
+/*
 if (!empty($emails)) {
     foreach ($emails as $email) {
         $stream = new NativeMailerHandler($email, $subject, $from, $minLevel);
         $logger->pushHandler(new BufferHandler($stream, 0, $minLevel));
     }
-}
+}*/
 
 $stream = new StreamHandler(api_get_path(SYS_ARCHIVE_PATH).'import_csv.log', $minLevel);
 $logger->pushHandler(new BufferHandler($stream, 0, $minLevel));