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

### Description

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

### Parameters

This function has no parameters.

### Return Values

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

### Errors/Exceptions

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

### Examples

Example #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());
}
?>`

The above example will output something similar to:

    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)
      }
    }

### See Also

- MongoDB\Driver\WriteConcern
- » Write Concern reference

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