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

    [field_count] => 0
    [host_info] => Localhost via UNIX socket
    [info] => 
    [insert_id] => 0
    [server_info] => 5.7.26-0ubuntu0.18.10.1
    [server_version] => 50726
    [stat] => Uptime: 4569470  Threads: 1  Questions: 943564  Slow queries: 0  Opens: 2942  Flush tables: 1  Open tables: 1987  Queries per second avg: 0.206
    [sqlstate] => 00000
    [protocol_version] => 10
    [thread_id] => 84400
    [warning_count] => 0
)

Array
(
    [0] => autocommit
    [1] => begin_transaction
    [2] => change_user
    [3] => character_set_name
    [4] => close
    [5] => commit
    [6] => connect
    [7] => dump_debug_info
    [8] => debug
    [9] => get_charset
    [10] => get_client_info
    [11] => get_connection_stats
    [12] => get_server_info
    [13] => get_warnings
    [14] => init
    [15] => kill
    [16] => multi_query
    [17] => __construct
    [18] => more_results
    [19] => next_result
    [20] => options
    [21] => ping
    [22] => poll
    [23] => prepare
    [24] => query
    [25] => real_connect
    [26] => real_escape_string
    [27] => reap_async_query
    [28] => escape_string
    [29] => real_query
    [30] => release_savepoint
    [31] => rollback
    [32] => savepoint
    [33] => select_db
    [34] => set_charset
    [35] => set_opt
    [36] => ssl_set
    [37] => stat
    [38] => stmt_init
    [39] => store_result
    [40] => thread_safe
    [41] => use_result
    [42] => refresh
)