Php/docs/mongodb-driver-cursor.getid

• PHP Manual
• MongoDB\Driver\Cursor
• Returns the ID for this cursor

MongoDB\Driver\Cursor::getId

(mongodb >=1.0.0)

MongoDB\Driver\Cursor::getId — Returns the ID for this cursor

说明

final public MongoDB\Driver\Cursor::getId ( ) : MongoDB\Driver\CursorId

Returns the MongoDB\Driver\CursorId associated with this cursor. A cursor ID uniquely identifies the cursor on the server.

参数

此函数没有参数。

返回值

Returns the MongoDB\Driver\CursorId for this cursor.

错误／异常

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

范例

Example #1 MongoDB\Driver\Cursor::getId() example

<?php/* In this example, we insert several documents into the collection and specify * a smaller batchSize to ensure that the first batch contains only a subset of * our results and the cursor remains open on the server. */$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");$query = new MongoDB\Driver\Query([], ['batchSize' => 2]);$bulk = new MongoDB\Driver\BulkWrite;$bulk->insert(['x' => 1]);$bulk->insert(['x' => 2]);$bulk->insert(['x' => 3]);$manager->executeBulkWrite('db.collection', $bulk);$cursor = $manager->executeQuery('db.collection', $query);var_dump($cursor->getId());?>

以上例程的输出类似于：

object(MongoDB\Driver\CursorId)#5 (1) {
  ["id"]=>
  int(94810124093)
}

参见

• MongoDB\Driver\CursorId
• MongoDB\Driver\CursorId::__toString() - String representation of the cursor ID