1 files changed, 53 insertions, 0 deletions
diff --git a/plugins/CoreHome/Columns/Metrics/AverageTimeOnSite.php b/plugins/CoreHome/Columns/Metrics/AverageTimeOnSite.php
new file mode 100644
index 0000000000..e590e19871
--- /dev/null
+++ b/plugins/CoreHome/Columns/Metrics/AverageTimeOnSite.php
@@ -0,0 +1,53 @@
+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+namespace Piwik\Plugins\CoreHome\Columns\Metrics;
+
+use Piwik\DataTable\Row;
+use Piwik\Metrics\Formatter;
+use Piwik\Piwik;
+use Piwik\Plugin\ProcessedMetric;
+
+/**
+ * The average number of seconds spent on the site per visit. Calculated as:
+ *
+ *     sum_visit_length / nb_visits
+ *
+ * sum_visit_length & nb_visits are calculated during archiving.
+ *
+ * @api
+ */
+class AverageTimeOnSite extends ProcessedMetric
+{
+    public function getName()
+    {
+        return 'avg_time_on_site';
+    }
+
+    public function compute(Row $row)
+    {
+        $sumVisitLength = $this->getMetric($row, 'sum_visit_length');
+        $nbVisits = $this->getMetric($row, 'nb_visits');
+
+        return Piwik::getQuotientSafe($sumVisitLength, $nbVisits, $precision = 0);
+    }
+
+    public function format($value, Formatter $formatter)
+    {
+        return $formatter->getPrettyTimeFromSeconds($value);
+    }
+
+    public function getTranslatedName()
+    {
+        return Piwik::translate('General_ColumnAvgTimeOnSite');
+    }
+
+    public function getDependentMetrics()
+    {
+        return array('sum_visit_length', 'nb_visits');
+    }
+}
+\ No newline at end of file