Fixed bugs caused by the previous commit

include/ProductPage.php

@@ -80,7 +80,7 @@ class ProductPage extends Page {
                         'tags' => $tags,
                         'info' => $info);
         $label = '';
-        if(class_exists('QRcode', false)) {
+        if(class_exists('QRcode')) {
             $label = replace($fields, $this->fragments['product_label']);
         }
         $fields['label'] = $label;

include/QR.php

@@ -10,7 +10,7 @@ class QR extends Responder {
     }
 
     public function render() {
-        if(class_exists('QRcode', false)) {
+        if(class_exists('QRcode')) {
             QRcode::svg((string)$this->product->get_serial());
         }
     }

index.php

@@ -1,13 +1,14 @@
 <?php
 
-set_include_path(get_include_path().PATH_SEPARATOR.'include/');
 spl_autoload_register(function ($class) {
-    if($class == 'qrcode') {
+    if($class == 'QRcode') {
         include('./phpqrcode/qrlib.php');
+        return;
     }
+    include('./include/'.$class.'.php');
 });
 require('./config.php');
-require('functions.php');
+require('./include/functions.php');
 
 header('Content-Type: text/html; charset=UTF-8');