1 files changed, 4 insertions, 1 deletions
diff --git a/libs/Zend/Db/Adapter/Mysqli.php b/libs/Zend/Db/Adapter/Mysqli.php
index e896b71a0d..2dcdd67813 100644
--- a/libs/Zend/Db/Adapter/Mysqli.php
+++ b/libs/Zend/Db/Adapter/Mysqli.php
@@ -317,8 +317,11 @@ class Zend_Db_Adapter_Mysqli extends Zend_Db_Adapter_Abstract
                 } elseif(is_string($option)) {
                     // Suppress warnings here
                     // Ignore it if it's not a valid constant
+                    if(!defined(strtoupper($option))) {
+                        continue;
+                    }
                     $option = @constant(strtoupper($option));
-                    if($option === null)
+                    if ($option === null)
                         continue;
                 }
                 mysqli_options($this->_connection, $option, $value);