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MongoDB\Driver\ReadConcern::getLevel

(mongodb >=1.0.0)

MongoDB\Driver\ReadConcern::getLevelReturns the ReadConcern's "level" option

说明

final public string|null MongoDB\Driver\ReadConcern::getLevel ( void )

参数

此函数没有参数。

返回值

Returns the ReadConcern's "level" option.

错误/异常

范例

Example #1 MongoDB\Driver\ReadConcern::getLevel() example

<?php

$rc 
= new MongoDB\Driver\ReadConcern();
var_dump($rc->getLevel());

$rc = new MongoDB\Driver\ReadConcern(MongoDB\Driver\ReadConcern::LOCAL);
var_dump($rc->getLevel());

$rc = new MongoDB\Driver\ReadConcern(MongoDB\Driver\ReadConcern::MAJORITY);
var_dump($rc->getLevel());

?>

以上例程会输出:

NULL
string(5) "local"
string(8) "majority"
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