Add Session::clear method

- Replace manual session clear by method in mod/manage

mod/manage.php

@@ -70,24 +70,8 @@ function manage_post(App $a) {
 	if (!DBA::isResult($user)) {
 		return;
 	}
-	unset($_SESSION['authenticated']);
-	unset($_SESSION['uid']);
-	unset($_SESSION['visitor_id']);
-	unset($_SESSION['administrator']);
-	unset($_SESSION['cid']);
-	unset($_SESSION['theme']);
-	unset($_SESSION['mobile-theme']);
-	unset($_SESSION['page_flags']);
-	unset($_SESSION['return_path']);
-	if (!empty($_SESSION['submanage'])) {
-		unset($_SESSION['submanage']);
-	}
-	if (!empty($_SESSION['sysmsg'])) {
-		unset($_SESSION['sysmsg']);
-	}
-	if (!empty($_SESSION['sysmsg_info'])) {
-		unset($_SESSION['sysmsg_info']);
-	}
+
+	Session::clear();
 
 	Session::setAuthenticatedForUser($a, $user, true, true);
 

src/Core/Session.php

@@ -99,6 +99,14 @@ class Session
 		unset($_SESSION[$name]);
 	}
 
+	/**
+	 * Clears the current session array
+	 */
+	public static function clear()
+	{
+		$_SESSION = [];
+	}
+
 	/**
 	 * @brief Sets the provided user's authenticated session
 	 *
@@ -107,6 +115,7 @@ class Session
 	 * @param bool  $login_initial
 	 * @param bool  $interactive
 	 * @param bool  $login_refresh
+	 * @throws \Friendica\Network\HTTPException\ForbiddenException
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
 	public static function setAuthenticatedForUser(App $a, array $user_record, $login_initial = false, $interactive = false, $login_refresh = false)