Php/docs/mongodb-driver-writeresult.getmatchedcount

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MongoDB\Driver\WriteResult::getMatchedCount

(mongodb >=1.0.0)

MongoDB\Driver\WriteResult::getMatchedCountReturns the number of documents selected for update


说明

final public MongoDB\Driver\WriteResult::getMatchedCount ( ) : int|null

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


参数

此函数没有参数。


返回值

Returns the number of documents selected for update, or null if the write was not acknowledged.


错误/异常


范例

Example #1 MongoDB\Driver\WriteResult::getMatchedCount() 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->getMatchedCount());?>

以上例程会输出:


int(1)

参见