MongoDB\Driver\WriteResult::getModifiedCount
(mongodb >=1.0.0)
MongoDB\Driver\WriteResult::getModifiedCount — Returns the number of existing documents updated
Descrizione
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().
Elenco dei parametri
Questa funzione non contiene parametri.
Valori restituiti
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.
Errori/Eccezioni
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
Esempi
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());
?>Il precedente esempio visualizzerà:
int(1)
Vedere anche:
- 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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