PHP/Core

* enforced v7.1 compliance, preparations for v7.2
 * removed deprecated usage of each()
 * prefer array deconstruction via [] instead of calling list()
 * try to catch failed session_start()
 * prefer ... - Token instead of calling func_get_args() func_num_args()
 * enforce return types in AjaxHandler
 * revision push

pages/event.php

@@ -355,7 +355,7 @@ class EventPage extends GenericPage
             $this->saveCache($tt);
         }
 
-        list($start, $end) = $this->postCache();
+        [$start, $end] = $this->postCache();
 
         header('Content-type: application/x-javascript; charset=utf-8');
         die(sprintf($tt, $start, $end));