fixed typo

Author: anthonygauthier

.env

@@ -1 +1 @@
-# export MYSQL_HOST=167.114.128.82 && export MYSQL_USERNAME=ag325 && export MYSQL_PASSWORD=a_password123! && export MYSQL_DATABASE=testdb && export MYSQL_PORT=3306
+# export DB_HOST=167.114.128.82 && export DB_USERNAME=ag325 && export DB_PASSWORD=a_password123! && export DB_DATABASE=testdb && export DB_PORT=3306

src/MySimpleORM/Mapper/ObjectMapping.php

@@ -211,7 +211,7 @@ public function mapObject(&$obj, $rows, &$objArr = null)
 
         foreach ($rows as $row) {
             // reset the object reference
-            $class = get_class($o);
+            $class = get_class($obj);
             $this->Object = new $class();
 
             foreach ($attributes as $key => $attribute) {