Returns the WriteConcernError's error message

# MongoDB\Driver\WriteConcernError::getMessage

(mongodb >=1.0.0)

MongoDB\Driver\WriteConcernError::getMessage — Returns the WriteConcernError's error message

### 说明

final public function MongoDB\Driver\WriteConcernError::getMessage(): string

### 参数

此函数没有参数。

### 返回值

Returns the WriteConcernError's error message.

### 错误／异常

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

### 示例

示例 #1 MongoDB\Driver\WriteConcernError::getMessage() 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()->getMessage());
    }

    ?>

以上示例的输出类似于：

    string(33) "waiting for replication timed out"

### 参见

- » Write Concern reference

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