diff --git a/src/Open/Config/HttpConfig.php b/src/Open/Config/HttpConfig.php
index ad4e08e..78777a5 100644
--- a/src/Open/Config/HttpConfig.php
+++ b/src/Open/Config/HttpConfig.php
@@ -7,7 +7,7 @@ class HttpConfig
 
     const FORMAT_USER_AGENT = 'YZY-Open-Client %s-PHP';
 
-    const SDK_VERSION = '2.0.19';
+    const SDK_VERSION = '2.0.20';
 
     const REQUEST_BASE_URL = 'https://open.youzanyun.com';
 
diff --git a/src/Open/Helper/EcommerceHelper.php b/src/Open/Helper/EcommerceHelper.php
index 0655fe6..8726c6a 100644
--- a/src/Open/Helper/EcommerceHelper.php
+++ b/src/Open/Helper/EcommerceHelper.php
@@ -67,6 +67,14 @@ private static function isUseProxy()
 
     private static function getEnvValue($key)
     {
-        return getenv($key);
+        if (empty($key)) {
+            return null;
+        }
+
+        if (isset($_SERVER[$key])) {
+            return $_SERVER[$key];
+        }
+
+        return null;
     }
 }
\ No newline at end of file