MongoDB\Driver\WriteResult::getMatchedCount
(mongodb >=1.0.0)
MongoDB\Driver\WriteResult::getMatchedCount — Returns the number of documents selected for update
说明
final
public
MongoDB\Driver\WriteResult::getMatchedCount (
void ) :
integer|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
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
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
- MongoDB\Driver\WriteResult::getModifiedCount() - Returns the number of existing documents updated
- MongoDB\Driver\WriteResult::isAcknowledged() - Returns whether the write was acknowledged
