Returns any write concern error that occurred

# MongoDB\Driver\WriteResult::getWriteConcernError

(mongodb >=1.0.0)

MongoDB\Driver\WriteResult::getWriteConcernError — Returns any write concern error that occurred

### 説明

final public MongoDB\Driver\WriteResult::getWriteConcernError ( void ) : MongoDB\Driver\WriteConcernError|null

### 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 a MongoDB\Driver\WriteConcernError if a write concern error was encountered during the write operation, and `NULL` 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::getWriteConcernError() example

`<?php
$manager = new MongoDB\Driver\Manager("mongodb://rs1.example.com,rs2.example.com/?replicaSet=myReplicaSet");
$bulk = new MongoDB\Driver\BulkWrite;
$bulk->insert(['x' => 1]);
$writeConcern = new MongoDB\Driver\WriteConcern(2, 1);
try {
$manager->executeBulkWrite('db.collection', $bulk, $writeConcern);
} catch(MongoDB\Driver\Exception\BulkWriteException $e) {
var_dump($e->getWriteResult()->getWriteConcernError());
}
?>`

上の例の出力は、 たとえば以下のようになります。

    object(MongoDB\Driver\WriteConcernError)#6 (3) {
      ["message"]=>
      string(33) "waiting for replication timed out"
      ["code"]=>
      int(64)
      ["info"]=>
      object(stdClass)#7 (1) {
        ["wtimeout"]=>
        bool(true)
      }
    }

### 参考

- MongoDB\Driver\WriteConcern
- » Write Concern reference