diff --git a/src/Docnet/DB.php b/src/Docnet/DB.php
index 1f39e23..40c1aef 100644
--- a/src/Docnet/DB.php
+++ b/src/Docnet/DB.php
@@ -95,6 +95,7 @@ public function commit()
         if (!$this->obj_db->commit()) {
             throw new \Exception("MySQL failed to commit the transaction");
         }
+        $this->bol_in_transaction = FALSE;
         return $this;
     }
 
@@ -113,6 +114,7 @@ public function rollback()
         if (!$this->obj_db->rollback()) {
             throw new \Exception("MySQL failed to rollback the transaction");
         }
+        $this->bol_in_transaction = FALSE;
         return $this;
     }
 
@@ -257,4 +259,4 @@ public function __destruct()
         }
     }
 
-}
\ No newline at end of file
+}
diff --git a/src/Docnet/DB/Statement.php b/src/Docnet/DB/Statement.php
index 65ac173..72d71f0 100644
--- a/src/Docnet/DB/Statement.php
+++ b/src/Docnet/DB/Statement.php
@@ -551,7 +551,8 @@ private function bindParameters()
      */
     private function isAssoc(array $arr)
     {
-        return (gettype(array_keys($arr)[0]) == "string");
+        $arr_keys = array_keys($arr);
+        return (gettype($arr_keys[0]) == "string");
     }
 
     /**