Returns whether the write was acknowledged

# MongoDB\Driver\WriteResult::isAcknowledged

(mongodb >=1.0.0)

MongoDB\Driver\WriteResult::isAcknowledged — Returns whether the write was acknowledged

### 説明

final public MongoDB\Driver\WriteResult::isAcknowledged ( void ) : bool

If the write is acknowledged, other count fields will be available on the MongoDB\Driver\WriteResult object.

### パラメータ

この関数にはパラメータはありません。

### 返り値

Returns `TRUE` if the write was acknowledged, and `FALSE` otherwise.

### エラー / 例外

- 引数のパースに失敗した場合に MongoDB\Driver\Exception\InvalidArgumentException をスローします。

### 例

例1 MongoDB\Driver\WriteResult::isAcknowledged() with acknowledged write concern

`<?php
$manager = new MongoDB\Driver\Manager;
$bulk = new MongoDB\Driver\BulkWrite;
$bulk->insert(['x' => 1]);
$result = $manager->executeBulkWrite('db.collection', $bulk);
var_dump($result->isAcknowledged());
?>`

上の例の出力は以下となります。

    bool(true)

例2 MongoDB\Driver\WriteResult::isAcknowledged() with unacknowledged write concern

`<?php
$manager = new MongoDB\Driver\Manager;
$bulk = new MongoDB\Driver\BulkWrite;
$bulk->insert(['x' => 1]);
$result = $manager->executeBulkWrite('db.collection', $bulk, new MongoDB\Driver\WriteConcern(0));
var_dump($result->isAcknowledged());
?>`

上の例の出力は以下となります。

    bool(false)

### 参考

- MongoDB\Driver\WriteConcern
- » Write Concern reference