官方指南
aminkt/yii2-upload-manager
Upload manager system based and inspired from WordPress upload manager.
yii2-image-manager
A module/widget for upload, manage and cropping images
yii2-attachments
Extension for file uploading and attaching to the models
yii2-widget-fileinput
An enhanced FileInput widget for Bootstrap 3.x with file preview, multiple selection, and more features
yii2-file-input-widget
Jasny File Input Bootstrap Widget + Local and Remote storage
yii2-file-upload
PHP library for uploading files to your server or Amazon S3
yii2-upload-file
Yii2 tools for upload file