MongoDB\Driver\WriteResult::getModifiedCount

Returns the number of existing documents updated

説明

final public intnull MongoDB\Driver\WriteResult::getModifiedCount()

If the update operation results in no change to the document (e.g. setting the value of a field to its current value), the modified count may be less than the value returned by MongoDB\Driver\WriteResult::getMatchedCount.

パラメータ

この関数にはパラメータはありません。

戻り値

Returns the number of existing documents updated, or null if the write was not acknowledged.

The modified count is not available on versions of MongoDB before 2.6, which used the legacy wire protocol version (i.e. OP_UPDATE). If this is the case, the modified count will also be null.

エラー / 例外

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

例

例1 MongoDB\Driver\WriteResult::getModifiedCount example

<?php

$manager = new MongoDB\Driver\Manager;

$bulk = new MongoDB\Driver\BulkWrite;
$bulk->insert(['x' => 1]);
$bulk->update(['x' => 1], ['$set' => ['y' => 3]]);
$bulk->update(['x' => 2], ['$set' => ['y' => 1]], ['upsert' => true]);
$bulk->update(['x' => 3], ['$set' => ['y' => 2]], ['upsert' => true]);
$bulk->delete(['x' => 1]);

$result = $manager->executeBulkWrite('db.collection', $bulk);

var_dump($result->getModifiedCount());

?>

上の例の出力は以下となります。

int(1)

参考

MongoDB\Driver\WriteResult::getMatchedCount
MongoDB\Driver\WriteResult::isAcknowledged