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MongoDB\Driver\ReadPreference::getModeString

(mongodb >=1.7.0)

MongoDB\Driver\ReadPreference::getModeString — Returns the ReadPreference's "mode" option as a string

说明

final public MongoDB\Driver\ReadPreference::getModeString(): string

参数

此函数没有参数。

返回值

Returns the ReadPreference's "mode" option as a string.

错误／异常

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

示例

示例 #1 MongoDB\Driver\ReadPreference::getModeString() example

<?php

$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::PRIMARY);
var_dump($rp->getModeString());

$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::PRIMARY_PREFERRED);
var_dump($rp->getModeString());

$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY);
var_dump($rp->getModeString());

$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY_PREFERRED);
var_dump($rp->getModeString());

$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::NEAREST);
var_dump($rp->getModeString());

?>

以上示例会输出：

string(7) "primary"
string(16) "primaryPreferred"
string(9) "secondary"
string(18) "secondaryPreferred"
string(7) "nearest"

参见

MongoDB\Driver\ReadPreference::getMode() - Returns the ReadPreference's "mode" option
» Read Preference reference

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