Refactored double Set-Cookie prevention code, and session reopening code

airtime_mvc/application/common/SessionHelper.php

@@ -0,0 +1,13 @@
+<?php
+
+class SessionHelper
+{
+    public static function reopenSessionForWriting() {
+        //PHP will send double Set-Cookie headers if we reopen the
+        //session for writing, and this breaks IE8 and some other browsers.
+        //This hacky workaround prevents double headers. Background here:
+        // https://bugs.php.net/bug.php?id=38104
+        ini_set('session.cache_limiter', null);
+        session_start(); // Reopen the session for writing (without resending the Set-Cookie header)
+    }
+}