Merge pull request #3479 from jdlferreira/develop

var_export in DB.php outputting string
diff --git a/system/database/DB.php b/system/database/DB.php
index fc9f4d0..a336271 100644
--- a/system/database/DB.php
+++ b/system/database/DB.php
@@ -130,7 +130,7 @@
 			{
 				if (is_string($val) && in_array(strtoupper($val), array('TRUE', 'FALSE', 'NULL')))
 				{
-					$val = var_export($val);
+					$val = var_export($val, TRUE);
 				}
 
 				$params[$key] = $val;