Improve DB version() implementation and add pg_version() support
diff --git a/system/database/drivers/sqlite/sqlite_driver.php b/system/database/drivers/sqlite/sqlite_driver.php
index 3e4b373..3eaec94 100644
--- a/system/database/drivers/sqlite/sqlite_driver.php
+++ b/system/database/drivers/sqlite/sqlite_driver.php
@@ -141,14 +141,15 @@
// --------------------------------------------------------------------
/**
- * Version number query string
+ * Database version number
*
- * @access public
* @return string
*/
- function _version()
+ public function version()
{
- return sqlite_libversion();
+ return isset($this->data_cache['version'])
+ ? $this->data_cache['version']
+ : $this->data_cache['version'] = sqlite_libversion();
}
// --------------------------------------------------------------------