PHP Manual
MongoDB\Driver\Server
Returns the latency of this server

MongoDB\Driver\Server::getLatency

(mongodb >=1.0.0)

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

说明

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

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

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