public static function available_dbals()
{
$arrDbals = array('mysqli' => 'MySQLi', 'mysql_pdo' => 'MySQL PDO');
foreach ($arrDbals as $key => $name) {
if (dbal::check_if_pdo($key)) {
$blnCheckResult = dbal::check_pdo(dbal::check_if_pdo($key));
} else {
$blnCheckResult = dbal::check_extension($key);
}
if (!$blnCheckResult) {
unset($arrDbals[$key]);
}
}
return $arrDbals;
}