# MongoDB\Driver\ReadPreference::getMode

(mongodb >=1.0.0)

MongoDB\Driver\ReadPreference::getMode — Returns the ReadPreference's "mode" option

警告

This function has been DEPRECATED as of extension version 1.20.0 and was removed in 2.0. Applications should use MongoDB\Driver\ReadPreference::getModeString() instead.

### 说明

final public MongoDB\Driver\ReadPreference::getMode(): int

### 参数

此函数没有参数。

### 返回值

Returns the ReadPreference's "mode" option.

### 错误／异常

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

### 更新日志

版本 | 说明
--- | ---
PECL mongodb 2.0.0 | 此方法已被移除。

### 示例

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

`<?php
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::PRIMARY);
var_dump($rp->getMode());
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::PRIMARY_PREFERRED);
var_dump($rp->getMode());
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY);
var_dump($rp->getMode());
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::SECONDARY_PREFERRED);
var_dump($rp->getMode());
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::NEAREST);
var_dump($rp->getMode());
?>`

以上示例会输出：

    int(1)
    int(5)
    int(2)
    int(6)
    int(10)

### 参见

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

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