From 99236c37281f983226a7eb2b8b03a1913f78456d Mon Sep 17 00:00:00 2001
From: LF Bittencourt <github@lfbittencourt.com>
Date: Thu, 21 Apr 2016 18:45:23 -0300
Subject: [PATCH] Update key validation to support PHP 5.4. Fix #75.

---
 lib/SparkPost/SparkPost.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/SparkPost/SparkPost.php b/lib/SparkPost/SparkPost.php
index 46623c9..4cfe5b7 100644
--- a/lib/SparkPost/SparkPost.php
+++ b/lib/SparkPost/SparkPost.php
@@ -115,7 +115,7 @@ public function setConfig($settingsConfig) {
     }
 
     // Validate API key because its required
-    if (!isset($settingsConfig['key']) || empty(trim($settingsConfig['key']))){
+    if (!isset($settingsConfig['key']) || !preg_match('/\S/', $settingsConfig['key'])){
       throw new \Exception('You must provide an API key');
     }