Php/docs/function.mysqlnd-ms-dump-servers

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mysqlnd_ms_dump_servers

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mysqlnd_ms_dump_serversReturns a list of currently configured servers


说明

mysqlnd_ms_dump_servers ( mixed $connection ) : array

Returns a list of currently configured servers.


参数

connection
A MySQL connection handle obtained from any of the connect functions of the mysqli, mysql or PDO_MYSQL extensions.


返回值

false on error. Otherwise, returns an array with two entries masters and slaves each of which contains an array listing all corresponding servers.

The function can be used to check and debug the list of servers currently used by the plugin. It is mostly useful when the list of servers changes at runtime, for example, when using MySQL Fabric.

masters and slaves server entries

Key Description Version
name_from_config Server entry name from config, if appliciable. NULL if no

configuration name is available.

Since 1.6.0.
hostname Host name of the server. Since 1.6.0.
user Database user used to authenticate against the server. Since 1.6.0.
port TCP/IP port of the server. Since 1.6.0.
socket Unix domain socket of the server. Since 1.6.0.


注释

Note:

mysqlnd_ms_dump_servers() requires PECL mysqlnd_ms >> 1.6.0.

范例

Example #1 mysqlnd_ms_dump_servers() example

{
    "myapp": {
        "master": {
            "master1": {
                "host":"master1_host",
                "port":"master1_port",
                "socket":"master1_socket",
                "db":"master1_db",
                "user":"master1_user",
                "password":"master1_pw"
            }
        },
        "slave": {
             "slave_0": {
                 "host":"slave0_host",
                 "port":"slave0_port",
                 "socket":"slave0_socket",
                 "db":"slave0_db",
                 "user":"slave0_user",
                 "password":"slave0_pw"
             },
             "slave_1": {
                 "host":"slave1_host"
             }
        }
    }
}

<?php$link = mysqli_connect("myapp", "global_user", "global_pass", "global_db", 1234, "global_socket");var_dump(mysqlnd_ms_dump_servers($link);?>

以上例程会输出:


array(2) {
  ["masters"]=>
  array(1) {
    [0]=>
    array(5) {
      ["name_from_config"]=>
      string(7) "master1"
      ["hostname"]=>
      string(12) "master1_host"
      ["user"]=>
      string(12) "master1_user"
      ["port"]=>
      int(3306)
      ["socket"]=>
      string(14) "master1_socket"
    }
  }
  ["slaves"]=>
  array(2) {
    [0]=>
    array(5) {
      ["name_from_config"]=>
      string(7) "slave_0"
      ["hostname"]=>
      string(11) "slave0_host"
      ["user"]=>
      string(11) "slave0_user"
      ["port"]=>
      int(3306)
      ["socket"]=>
      string(13) "slave0_socket"
    }
    [1]=>
    array(5) {
      ["name_from_config"]=>
      string(7) "slave_1"
      ["hostname"]=>
      string(11) "slave1_host"
      ["user"]=>
      string(12) "gloabal_user"
      ["port"]=>
      int(1234)
      ["socket"]=>
      string(13) "global_socket"
    }
  }
}