Changed double quotes to single quotes to meet style guidelines
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
index b36a3d9..705b165 100644
--- a/system/database/drivers/pdo/pdo_driver.php
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -366,7 +366,7 @@
protected function _update_batch($table, $values, $index, $where = NULL)
{
$ids = array();
- $where = ($where !== '' && count($where) >=1) ? implode(" ", $where).' AND ' : '';
+ $where = ($where !== '' && count($where) >=1) ? implode(' ', $where).' AND ' : '';
foreach ($values as $key => $val)
{