Returns a list of currently configured servers

# mysqlnd_ms_dump_servers

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mysqlnd_ms_dump_servers — Returns a list of currently configured servers

### 説明

mysqlnd_ms_dump_servers ( mixed `$connection` ) : array

Returns a list of currently configured servers.

### パラメータ

`connection`

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

### 返り値

`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.

### 注意

> 注意:

> mysqlnd_ms_dump_servers() requires PECL mysqlnd_ms >> 1.6.0.

### 例

例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);
?>`

上の例の出力は以下となります。

    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"
        }
      }
    }