MySQL Manual
9 MySQL APIs
- 9.1 MySQL C API
- 9.1.3 C API Function Descriptions
- 9.1.3.1
mysql_affected_rows() - 9.1.3.2
mysql_change_user() - 9.1.3.3
mysql_character_set_name() - 9.1.3.4
mysql_close() - 9.1.3.5
mysql_connect() - 9.1.3.6
mysql_create_db() - 9.1.3.7
mysql_data_seek() - 9.1.3.8
mysql_debug() - 9.1.3.9
mysql_drop_db() - 9.1.3.10
mysql_dump_debug_info() - 9.1.3.11
mysql_eof() - 9.1.3.12
mysql_errno() - 9.1.3.13
mysql_error() - 9.1.3.14
mysql_escape_string() - 9.1.3.15
mysql_fetch_field() - 9.1.3.16
mysql_fetch_fields() - 9.1.3.17
mysql_fetch_field_direct() - 9.1.3.18
mysql_fetch_lengths() - 9.1.3.19
mysql_fetch_row() - 9.1.3.20
mysql_field_count() - 9.1.3.21
mysql_field_seek() - 9.1.3.22
mysql_field_tell() - 9.1.3.23
mysql_free_result() - 9.1.3.24
mysql_get_client_info() - 9.1.3.25
mysql_get_server_version() - 9.1.3.26
mysql_get_host_info() - 9.1.3.27
mysql_get_proto_info() - 9.1.3.28
mysql_get_server_info() - 9.1.3.29
mysql_info() - 9.1.3.30
mysql_init() - 9.1.3.31
mysql_insert_id() - 9.1.3.32
mysql_kill() - 9.1.3.33
mysql_list_dbs() - 9.1.3.34
mysql_list_fields() - 9.1.3.35
mysql_list_processes() - 9.1.3.36
mysql_list_tables() - 9.1.3.37
mysql_num_fields() - 9.1.3.38
mysql_num_rows() - 9.1.3.39
mysql_options() - 9.1.3.40
mysql_ping() - 9.1.3.41
mysql_query() - 9.1.3.42
mysql_real_connect() - 9.1.3.43
mysql_real_escape_string() - 9.1.3.44
mysql_real_query() - 9.1.3.45
mysql_reload() - 9.1.3.46
mysql_row_seek() - 9.1.3.47
mysql_row_tell() - 9.1.3.48
mysql_select_db() - 9.1.3.49
mysql_sqlstate() - 9.1.3.50
mysql_shutdown() - 9.1.3.51
mysql_stat() - 9.1.3.52
mysql_store_result() - 9.1.3.53
mysql_thread_id() - 9.1.3.54
mysql_use_result() - 9.1.3.55
mysql_commit() - 9.1.3.56
mysql_rollback() - 9.1.3.57
mysql_autocommit() - 9.1.3.58
mysql_more_results() - 9.1.3.59
mysql_next_result()
- 9.1.3.1
9.1.3.40 mysql_ping()
int mysql_ping(MYSQL *mysql)
Description
Checks whether the connection to the server is working. If it has gone down, an automatic reconnection is attempted.
This function can be used by clients that remain idle for a long while, to check whether the server has closed the connection and reconnect if necessary.
Return Values
Zero if the server is alive. Non-zero if an error occurred.
Errors
CR_COMMANDS_OUT_OF_SYNC- Commands were executed in an improper order.
CR_SERVER_GONE_ERROR- The MySQL server has gone away.
CR_UNKNOWN_ERROR- An unknown error occurred.
