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

### 说明

final public function MongoDB\Driver\WriteResult::getWriteConcernError(): ?MongoDB\Driver\WriteConcernError

### 参数

此函数没有参数。

### 返回值

Returns a MongoDB\Driver\WriteConcernError if a write concern error was encountered during the write operation, and `null` otherwise.

### 错误／异常

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

### 示例

示例 #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' => $writeConcern]);
    } catch(MongoDB\Driver\Exception\BulkWriteException $e) {
        var_dump($e->getWriteResult()->getWriteConcernError());
    }

    ?>

以上示例的输出类似于：

    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)
      }
    }

### 参见

- MongoDB\Driver\WriteConcern
- » Write Concern reference

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