MongoDB\Driver\Server::getLatency

(mongodb >=1.0.0)

MongoDB\Driver\Server::getLatency — Returns the latency of this server

说明

final public string MongoDB\Driver\Server::getLatency ( void )

Returns the latency of this server (i.e. the client's measured » round trip time of an ismaster command).

参数

此函数没有参数。

返回值

Returns the latency of this server.

错误／异常

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

范例

Example #1 MongoDB\Driver\Server::getLatency() example

  <?php

$manager  = new  MongoDB \ Driver \ Manager ( "mongodb://localhost:27017/" );

 $rp  = new  MongoDB \ Driver \ ReadPreference ( MongoDB \ Driver \ ReadPreference :: RP_PRIMARY );
 $server  =  $manager -> selectServer ( $rp );

 var_dump ( $server -> getLatency ());

 ?>

以上例程的输出类似于：

int(592)

参见

MongoDB\Driver\Server::getInfo() - Returns an array of information about this server
» Server Discovery and Monitoring Specification