bl Object
(
    [main] => main Object
        (
            [mysqli] => mysqli Object
                (
                    [affected_rows] => 0
                    [client_info] => mysqlnd 5.0.12-dev - 20150407 - $Id: 3591daad22de08524295e1bd073aceeff11e6579 $
                    [client_version] => 50012
                    [connect_errno] => 1040
                    [connect_error] => Too many connections
                    [errno] => 0
                    [error] => 
                    [error_list] => Array
                        (
                        )

                    [field_count] => 0
                    [host_info] => 127.0.0.1 via TCP/IP
                    [info] => 
                    [insert_id] => 0
                    [server_info] => 5.7.34-0ubuntu0.18.04.1-log
                    [server_version] => 50734
                    [stat] => Uptime: 12959823  Threads: 339  Questions: 7926395804  Slow queries: 201832310  Opens: 96749  Flush tables: 1  Open tables: 1952  Queries per second avg: 611.612
                    [sqlstate] => 00000
                    [protocol_version] => 10
                    [thread_id] => 2922338838
                    [warning_count] => 0
                )

            [td] => mysqli Object
                (
                    [affected_rows] => 
                    [client_info] => 
                    [client_version] => 50012
                    [connect_errno] => 1040
                    [connect_error] => Too many connections
                    [errno] => 
                    [error] => 
                    [error_list] => 
                    [field_count] => 
                    [host_info] => 
                    [info] => 
                    [insert_id] => 
                    [server_info] => 
                    [server_version] => 
                    [stat] => 
                    [sqlstate] => 
                    [protocol_version] => 
                    [thread_id] => 
                    [warning_count] => 
                )

        )

)