Php/docs/mongodb-driver-writeresult.getmatchedcount

• PHP Manual
• MongoDB\Driver\WriteResult
• Returns the number of documents selected for update

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 ( ) : 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

• 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