MongoDB\Driver\WriteResult::getModifiedCount
(mongodb >=1.0.0)
MongoDB\Driver\WriteResult::getModifiedCount — Returns the number of existing documents updated
Descrierea
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().
Parametri
Această funcție nu are parametri.
Valorile întoarse
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.
Erori/Excepții
- Emite MongoDB\Driver\Exception\InvalidArgumentException în cazul erorilor la interpretarea argumentelor.
Exemple
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());
?>
Exemplul de mai sus va afișa:
int(1)
A se vedea și
- 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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