MongoDB\Driver\Server::getLatency

(mongodb >=1.0.0)

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

final public MongoDB\Driver\Server::getLatency(): ?integer

Returns the latency of this server in milliseconds. This is the client's measured » round trip time of a hello command.

此函数没有参数。

Returns the latency of this server in milliseconds, or null if no latency has been measured (e.g. client is connected to a load balancer).

版本	说明
PECL mongodb 1.11.0	This method will return `null` if no latency has been measured. In earlier versions, an integer was always returned and an unset value might be reported as `-1`.

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

<?php

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

var_dump($server->getLatency());

?>

以上示例的输出类似于：

int(592)

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