MongoDB\Driver\BulkWrite::count

(mongodb >=1.0.0)

MongoDB\Driver\BulkWrite::count — Count expected roundtrips for executing the bulk

说明

public int MongoDB\Driver\BulkWrite::count ( void )

Returns the expected number of client-to-server roundtrips required to execute all write operations in the MongoDB\Driver\BulkWrite.

参数

此函数没有参数。

返回值

Returns number of expected roundtrips to execute the MongoDB\Driver\BulkWrite.

错误／异常

Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

范例

Example #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));

?>

以上例程会输出：

int(3)