MongoDB\Driver\WriteResult::getModifiedCount
(mongodb >=1.0.0)
MongoDB\Driver\WriteResult::getModifiedCount — Returns the number of existing documents updated
설명
final public int|null MongoDB\Driver\WriteResult::getModifiedCount
( void
)
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().
인수
이 함수는 인수가 없습니다.
반환값
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 2.4, which
used the legacy wire protocol version (i.e. OP_UPDATE). If this is the case,
the modified count will also be NULL.
오류/예외
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
예제
Example #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());
?>
위 예제의 출력:
int(1)
참고
- MongoDB\Driver\WriteResult::getMatchedCount() - Returns the number of documents selected for update
- MongoDB\Driver\WriteResult::isAcknowledged() - Returns whether the write was acknowledged
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