11-09-2014
IPV6 clients can use low ip/port IPV4 servers, and IPV4 cients can use low ip/port IPV6 servers as long as there is a dual IP stack on the server and dual net fabric between. Remember that, on a client or server, a connection just devolves into an open socket fd. If I am listening on or connecting to port 80 TCP, I never know which stack my connection came from.
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LEARN ABOUT PHP
mysqlnd_ms_dump_servers
MYSQLND_MS_DUMP_SERVERS(3) 1 MYSQLND_MS_DUMP_SERVERS(3)
mysqlnd_ms_dump_servers - Returns a list of currently configured servers
SYNOPSIS
array mysqlnd_ms_dump_servers (mixed $connection)
DESCRIPTION
Returns a list of currently configured servers.
PARAMETERS
o $connection
- A MySQL connection handle obtained from any of the connect functions of the mysqli, mysql or PDO_MYSQL extensions.
RETURN VALUES
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 configura- | |
| | tion 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. | |
| | | |
+-----------------+--------------------------------------+---+
NOTES
Note
mysqlnd_ms_dump_servers(3) requires PECL mysqlnd_ms >> 1.6.0.
EXAMPLES
Example #1
mysqlnd_ms_dump_servers(3) 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);
?>
The above example will output:
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"
}
}
}
PHP Documentation Group MYSQLND_MS_DUMP_SERVERS(3)