<?php if (!isset($_GET['useConfig'])) { /* case 1: default */ $bloggsCM = new BloggsCommsManager(); $megaCM = new MegaCommsManager(); $appt = $bloggsCM->make(CommsManager::APPT); $ttd = $megaCM->make(CommsManager::TTD); $cnt = $bloggsCM->make(CommsManager::CONTACT); echo $appt->encode(); //Appointment Encoded with BloggsCal format echo $ttd->encode(); //T0d0 Encoded with MegaCal format echo $cnt->encode(); //Contact Encoded with BloggsCal format } else { /* case 2: using AppConfig from the end of 9-th chapter */ $cm = AppConfig::getInstance()->getCommsManager(); $appt = $cm->make(CommsManager::APPT); $ttd = $cm->make(CommsManager::TTD); $cnt = $cm->make(CommsManager::CONTACT); echo $appt->encode(); //Appointment Encoded with MegaCal format echo $ttd->encode(); //T0d0 Encoded with MegaCal format echo $cnt->encode(); //Contact Encoded with MegaCal format