MongoDB\Driver\BulkWrite::count
(mongodb >=1.0.0)
MongoDB\Driver\BulkWrite::count — Count number of write operations in the bulk
説明
public integer MongoDB\Driver\BulkWrite::count
( void
)
Returns the number of write operations added to the MongoDB\Driver\BulkWrite object.
パラメータ
この関数にはパラメータはありません。
返り値
Returns number of write operations added to the MongoDB\Driver\BulkWrite object.
エラー / 例外
- 引数のパースに失敗した場合に MongoDB\Driver\Exception\InvalidArgumentException をスローします。
変更履歴
| バージョン | 説明 |
|---|---|
| 1.2.0 | Returns the number of write operations added to the MongoDB\Driver\BulkWrite object. Earlier versions returned the expected number of client-to-server roundtrips required to execute all write operations. |
例
例1 MongoDB\Driver\BulkWrite::count() example
<?php
$bulk = new MongoDB\Driver\BulkWrite;
$bulk->insert(['_id' => 1, 'x' => 1]);
$bulk->insert(['_id' => 2, 'x' => 2]);
$bulk->update(['x' => 2], ['$set' => ['x' => 1]]);
$bulk->delete(['x' => 1]);
var_dump(count($bulk));
?>
上の例の出力は以下となります。
int(4)
忘却曲線を使ってこの知識を確実に記憶に残す
