使用PHP的MongoDB自动增量ID

问题描述

当前，我正在使用此php代码在MongoDB中创建我自己的自动增量ID.

currently i'm using this php code to create my own auto increment ID in MongoDB.

$mongo = new MongoDB\Driver\Manager("mongodb://10.1.1.111:27017");

$find = [ '_id' => 'campaignid' ];
$query = new MongoDB\Driver\Query($find, [ ]);
$rows = $mongo->executeQuery('testdb.counters', $query);
$arr = $rows->toArray();

$oldId = 0;
if(count($arr) > 0)
{
    $old = array_pop($arr);
    $oldId = intval($old->seq);
}

$nextId = ++$oldId;

$set = [ '_id' => 'campaignid', 'seq' => $nextId ];
$insRec = new MongoDB\Driver\BulkWrite;
$insRec->update($find, ['$set' => $set], ['multi' => false, 'upsert' => true]);
$writeConcern = new MongoDB\Driver\WriteConcern(MongoDB\Driver\WriteConcern::MAJORITY, 1000);
$result = $mongo->executeBulkWrite('testdb.counters', $insRec, $writeConcern);

我必须获取旧ID，然后递增并将其写回.我认为 MongoDB \ Driver \ Manager :: executeReadWriteCommand有更好的方法，但我找不到它.

I have to fetch the old ID, increment and write it back. I think there is a better way with MongoDB\Driver\Manager::executeReadWriteCommand, but i was unable to find it.

我发现了这，其中 findAndModify ，但是它是为不推荐使用的.

I found this where is a solution with findAndModify, but it is written for MongoClient which is deprecated.

任何想法如何使用 executeReadWriteCommand 或更好的方法?

Any ideas how to use executeReadWriteCommand or maybe a better way?

推荐答案

这里是另一种解决方案.假设您要添加文档并增加ID.您可以执行以下操作:

Here is another solution. Let's say you want to upsert a document and increment ID. You can do something like this:

$mongo->testdb->updateOne(
   ['myidfield' => '123'],
   [
     '$set' => ['name' => 'John'],
     '$inc' => ['id' => 1]
   ],
   [
     'upsert' => true
   ]
);

这篇关于使用PHP的MongoDB自动增量ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！