Actualización

vendor/zendframework/zend-validator/src/Barcode/Upca.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Validator\Barcode;
+
+class Upca extends AbstractAdapter
+{
+    /**
+     * Constructor for this barcode adapter
+     */
+    public function __construct()
+    {
+        $this->setLength(12);
+        $this->setCharacters('0123456789');
+        $this->setChecksum('gtin');
+    }
+}