[statistics] Per-location usage stats; include active lecture count

1 files changed, 5 insertions, 5 deletions

diff --git a/modules-available/statistics/inc/statisticsfilterset.inc.php b/modules-available/statistics/inc/statisticsfilterset.inc.php
index 086c4fae..90a39f7d 100644
--- a/modules-available/statistics/inc/statisticsfilterset.inc.php
+++ b/modules-available/statistics/inc/statisticsfilterset.inc.php
@@ -40,7 +40,7 @@ class StatisticsFilterSet
 
 	public function filterNonClients()
 	{
-		if (Module::get('runmode') === false || $this->hasFilter('IsClientStatisticsFilter') !== false)
+		if (Module::get('runmode') === false || $this->hasFilter('IsClientStatisticsFilter') !== null)
 			return;
 		$this->cache = false;
 		// Runmode module exists, add filter
@@ -49,7 +49,7 @@ class StatisticsFilterSet
 
 	/**
 	 * @param string $type filter type (class name)
-	 * @return false|DatabaseFilter The filter, false if not found
+	 * @return ?DatabaseFilter The filter, false if not found
 	 */
 	public function hasFilter(string $type)
 	{
@@ -58,18 +58,18 @@ class StatisticsFilterSet
 				return $filter;
 			}
 		}
-		return false;
+		return null;
 	}
 
 	/**
 	 * @param string $type filter type key/id
-	 * @return false|DatabaseFilter The filter, false if not found
+	 * @return ?DatabaseFilter The filter, false if not found
 	 */
 	public function hasFilterKey(string $type)
 	{
 		if (isset($this->filters[$type]))
 			return $this->filters[$type];
-		return false;
+		return null;
 	}
 
 	/**