Can get information about a group

classes/models/AdvancedGroupInfo.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * Advanced information about a group model
+ * 
+ * @author Pierre HUBERT
+ */
+
+//Make sure that GroupInfo has already been included
+require_once __DIR__."/GroupInfo.php";
+
+class AdvancedGroupInfo extends GroupInfo {
+
+    //Private fields
+    private $time_create = -1;
+
+    //Get and set the creation time of the group
+    public function set_time_create(int $time_create){
+		$this->time_create = $time_create;
+	}
+
+	public function has_time_create() : bool {
+		return $this->time_create > -1;
+	}
+
+	public function get_time_create() : int {
+		return $this->time_create;
+    }
+
+}