(mongodb >=1.2.0)
MongoDB\Driver\ReadPreference::getMaxStalenessSeconds — Retorna a opção "maxStalenessSeconds" do ReadPreference
Esta função não possui parâmetros.
   Retorna a opção "maxStalenessSeconds" do ReadPreference. Se nenhuma inatividade máxima
   tiver sido especificada,
   MongoDB\Driver\ReadPreference::NO_MAX_STALENESS
   será retornada.
  
Exemplo #1 Exemplo de MongoDB\Driver\ReadPreference::getMaxStalenessSeconds()
<?php
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY);
var_dump($rp->getMaxStalenessSeconds());
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY, null, [
    'maxStalenessSeconds' => MongoDB\Driver\ReadPreference::NO_MAX_STALENESS,
]);
var_dump($rp->getMaxStalenessSeconds());
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY, null, [
    'maxStalenessSeconds' => MongoDB\Driver\ReadPreference::SMALLEST_MAX_STALENESS_SECONDS,
]);
var_dump($rp->getMaxStalenessSeconds());
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY, null, [
    'maxStalenessSeconds' => 1000,
]);
var_dump($rp->getMaxStalenessSeconds());
?>O exemplo acima produzirá:
int(-1) int(-1) int(90) int(1000)
