sachgiaokhoaorg/app/Libraries/Mongo.php

<?php

declare(strict_types=1);

namespace App\Libraries;

use MongoDB\Client;

/**
 * MongoDB connection singleton (mongo-harness).
 */
class Mongo
{
    private static ?Client $client = null;

    public static function client(): Client
    {
        if (self::$client === null) {
            $uri = env('mongo.uri', 'mongodb://127.0.0.1:27017');
            self::$client = new Client($uri, ['serverSelectionTimeoutMS' => 5000]);
        }

        return self::$client;
    }

    public static function db(): \MongoDB\Database
    {
        return self::client()->selectDatabase((string) env('mongo.db', 'sachgiaokhoa'));
    }

    public static function col(string $name): \MongoDB\Collection
    {
        return self::db()->selectCollection($name, ['typeMap' => ['root' => 'array', 'document' => 'array', 'array' => 'array']]);
    }
}