From 3c1efd07af3fc823636149cfabca835b0f871138 Mon Sep 17 00:00:00 2001
From: Del <del@babel.com.au>
Date: Wed, 27 Jan 2016 10:55:17 +0800
Subject: [PATCH] fix validate so it does not throw an error on parameters with
 a zero value

---
 src/Omnipay/Common/Message/AbstractRequest.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Omnipay/Common/Message/AbstractRequest.php b/src/Omnipay/Common/Message/AbstractRequest.php
index e19e3085..299db883 100644
--- a/src/Omnipay/Common/Message/AbstractRequest.php
+++ b/src/Omnipay/Common/Message/AbstractRequest.php
@@ -209,7 +209,7 @@ public function validate()
     {
         foreach (func_get_args() as $key) {
             $value = $this->parameters->get($key);
-            if (empty($value)) {
+            if (! isset($value)) {
                 throw new InvalidRequestException("The $key parameter is required");
             }
         }