register shutdown procedure

boot.php

@@ -904,6 +904,7 @@ class App {
 		spl_autoload_register('ZotlabsAutoloader::loader');
 
 		self::$meta= new Zotlabs\Web\HttpMeta();
+
 	}
 
 	public static function get_baseurl($ssl = false) {
@@ -1632,6 +1633,7 @@ function login($register = false, $form_id = 'main-login', $hiddens=false) {
  * @brief Used to end the current process, after saving session state.
  */
 function killme() {
+	register_shutdown_function('shutdown');
 	exit;
 }
 
@@ -1643,6 +1645,11 @@ function goaway($s) {
 	killme();
 }
 
+function shutdown() {
+	global $db;
+	$db->close();
+}
+
 /**
  * @brief Returns the entity id of locally logged in account or false.
  *

index.php

@@ -179,4 +179,4 @@ call_hooks('page_end', App::$page['content']);
 
 construct_page($a);
 
-exit;
+killme();