Question

我使用的是Windows 10 64位，xampp 3.2.2，PHP 5.6.30，PHP Extension Build VC11，MongoDB服务器版本：3.4.3。

我收到的错误如“致命错误：第4行的D：\ xampp \ htdocs \ test \ test1.php中找不到类'MongoClient'。”

以下是我正在使用的代码

CODE

<?php

// connect
$m = new MongoClient();

// select a database
$db = $m->cabin;

// select a collection (analogous to a relational database's table)
$collection = $db->user;

// find everything in the collection
$cursor = $collection->find();

// iterate through the results
foreach ($cursor as $document) {
    echo $document["title"] . "\n";
}

?>

我在文件夹(D:\xampp\php\ext)中添加了dll文件，并在php.ini (D:\xampp\php)“extension = php_mongodb.dll”中添加了扩展名。但问题没有解决。

MongoDB （Mongo db正在运行）

user@DESKTOP-JCDJQ65 MINGW64 /d
$ mongo
MongoDB shell version v3.4.3
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.3
use cabin
switched to db cabin
show tables
bmessages
booking
cabins
club
country
customer
email
facilities
land
mschool
region
role
rooms
settings
tempuser
tour
user
userold
visit

Answer 1

MongoClient属于久已弃用的Mongo extension。新MongoDB extension使用Manager连接到数据库，例如

$m = new MongoDB\Driver\Manager("mongodb://localhost:27017");
$cursor = $manager->executeQuery("cabin.user", new MongoDB\Driver\Query([]));
foreach ($cursor as $document) {
    echo $document["title"] . "\n";
}

或使用任何更高级别的抽象库。例如。 https://github.com/mongodb/mongo-php-library提供与旧版驱动程序类似的界面。

Answer 2

MongoDB \ Driver \ Manager负责维护与MongoDB的连接。

<强>连接

$mng = new MongoDB\Driver\Manager("mongodb://localhost:27017");

列出数据库

$listdatabases = new MongoDB\Driver\Command(["listDatabases" => 1]);
$res = $mng->executeCommand("admin", $listdatabases);

阅读所有数据

$query = new MongoDB\Driver\Query([]); 

$rows = $mng->executeQuery("database_name.collection_name", $query);

foreach ($rows as $row) {

    echo "$row->name\n";
}

批量写入（同时执行两项或多项操作）

$bulk = new MongoDB\Driver\BulkWrite;

$doc = ['_id' => new MongoDB\BSON\ObjectID, 'name' => 'Toyota', 'price' => 26700];
$bulk->insert($doc);
$bulk->update(['name' => 'Audi'], ['$set' => ['price' => 52000]]);
$bulk->delete(['name' => 'Hummer']);

$mng->executeBulkWrite('testdb.cars', $bulk);

如何解决致命错误：找不到类'MongoClient'？

2 个答案: