MongoDB\Driver\BulkWrite::count
(mongodb >=1.0.0)
MongoDB\Driver\BulkWrite::count — Count number of write operations in the bulk
说明
Returns the number of write operations added to the MongoDB\Driver\BulkWrite object.
参数
此函数没有参数。
返回值
Returns number of write operations added to the MongoDB\Driver\BulkWrite object.
错误／异常
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
更新日志
| 版本 | 说明 |
|---|---|
| PECL mongodb 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. |
示例
示例 #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));
?>以上示例会输出：
int(4)