在带有mongo-php-library 2.2驱动程序的Laravel 5.3下使用Gridfs

composer require mongodb/mongodb

'mongodb' => [
    'driver' => 'mongodb',
    'host' => env('MONGO_DB_HOST', 'localhost'),
    'port' => env('MONGO_DB_PORT', 27017),
    'database' => env('MONGO_DB_DATABASE'),
    'username' => env('MONGO_DB_USERNAME'),
    'password' => env('MONGO_DB_PASSWORD'),
    'options' => [
        'database' => 'admin' // MongoDB认证数据库，默认为admin
    ],
],

use Illuminate\Support\Facades\Storage;

// 存储文件到GridFS
$file = request()->file('file');
$filename = $file->getClientOriginalName();
$stream = fopen($file->getRealPath(), 'r');
Storage::disk('mongodb')->put($filename, $stream);

// 从GridFS读取文件
$file = Storage::disk('mongodb')->get($filename);