Deprecated: Optional parameter $keys declared before required parameter $cms_id is implicitly treated as a required parameter in /home/www/dev/work/class/blog/CmsKey.php on line 75

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$title is deprecated in /home/www/dev/work/website/lvesu/class/controller/blog/php.php on line 28

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$outlink is deprecated in /home/www/dev/work/website/lvesu/template/blog/cms/php.manual.tpl on line 2

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$status is deprecated in /home/www/dev/work/website/lvesu/template/blog/index.head.php on line 2
PHP - Manual: MongoCollection::createDBRef - 互联网笔记

略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: MongoCollection::createDBRef

2025-05-18

MongoCollection::createDBRef

(PECL mongo >=0.9.0)

MongoCollection::createDBRef创建一个数据库引用

说明

public MongoCollection::createDBRef ( mixed $document_or_id ) : array

参数

document_or_id

If an array or object is given, its _id field will be used as the reference ID. If a MongoId or scalar is given, it will be used as the reference ID.

返回值

返回一个数据库的引用数组。

如果提供了不包含 _id 字段的数组当做 document_or_id 参数,将会返回 NULL

范例

Example #1 MongoCollection::createDBRef() 例子

<?php

$songs 
$db->songs;
$playlists $db->playlists;

// 为 song 创建引用
$manamana $songs->findOne(array('title' => 'Ma na ma na'));
$refToSong $songs->createDBRef($manamana);

// 添加引用到我的播放列表
$playlists->update(array('username' => 'me'), array('$push' => array('songlist' => $refToSong)));

?>

参见

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.

官方地址:https://www.php.net/manual/en/mongocollection.createdbref.php

冷却塔厂家 广告
中文GPT4.0无需注册 广告
北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3