• $_count_string : CI_DB_cubrid_driver , CI_DB_mssql_driver , CI_DB_mysqli_driver , CI_DB_postgre_driver , CI_DB_sqlsrv_driver , CI_DB_sqlite_driver , CI_DB_oci8_driver , CI_DB_pdo_driver , CI_DB_odbc_driver , CI_DB_mysql_driver
• $delete_hack : CI_DB_mysql_driver , CI_DB_mysqli_driver
• $personalinfo : language