Exploring SAPI++: A Multi‑Tenant SaaS Framework Powered by ThinkPHP 6.x

1. Open‑Source Project Overview

SAPI++ is a multi‑application, multi‑tenant, multi‑terminal SaaS platform development framework. Built on ThinkPHP 6.x’s multi‑application mode, developers can create their own SaaS service platform without additional learning; simplicity and ease of use are its hallmarks.

2. Open‑Source License

The project is released under the GPL‑3.0 license.

3. Interface Showcase

4. Feature Overview

Features of SAPI++ v2.0

Out‑of‑the‑box : Quick installation within minutes; after setup you can start development without complex configuration.

Application Isolation : Supports separate databases and tables, allowing tenants to manage data security themselves.

Convenient and Fast : No Vue framework, no compilation; based on native jQuery with a unified entry point.

API Authentication : Integrates standardized API logic, conforms to REST design principles, and includes system authentication mechanisms.

Menu Integration : Interface‑based menu integration lets applications attach to any menu module without backend configuration.

Elegant Styles : Provides independent, refined CSS UI styles for the SAPI++ admin console.

Independent Domain : Each tenant can bind an independent domain (e.g., WEB/H5 can have separate access).

Advantages of SAPI++ v2.0

Integration with WeChat Open Platform, enabling one‑click authorization and deployment of SaaS applications (WeChat Mini‑Programs).

Comprehensive WeChat public‑account and Mini‑Program authorization system, fully encapsulated via API, requiring no additional development.

Supports Vue/React front‑end and back‑end separation, SSR, and hybrid development.

Supports building independent apps for Android, iOS, public accounts, Mini‑Programs, H5, PC, etc.

Tenant purchase, authorization, recharge, and billing management.

Complete membership account system with unlimited hierarchical management.

Tenants can simultaneously purchase authorizations for countless product applications.

5. Technical Stack

Environment Requirements

Framework: ThinkPHP6.x (WeChat development framework)
Environment: PHP 8.0.2 + MySQL
System: Windows, Linux (recommended)
PHP >= 8.0.2
Nginx >= 1.14 or Apache >= 2.4
MySQL >= 5.7 (InnoDB engine)
Redis >= 5.0
PHP extensions: fileinfo, curl, openssl, simpleXML, redis, mbstring, mysqli, gd, zip

6. Directory Structure

Please follow the naming conventions to reduce unnecessary errors during development.

SAPI++ follows the same directory layout as ThinkPHP 6.x; refer to the official ThinkPHP manual for details.

In actual deployment, ensure only the public directory is externally accessible. On macOS or Linux, set the runtime directory permissions to 777.

├─app    Application directory
│  ├─module_name1        Application name
│  │  ├─common.php      Functions file
│  │  ├─config          Config directory
│  │  │  ├─admin.php    Admin menu config
│  │  │  ├─Tenant.php   Tenant menu config
│  │  │  ├─version.php  Application config info
│  │  ├─api    Controller directory
│  │  │ ├─v1_0        API directory (v1_x_x spec)
│  │  │ ├─service     No‑signature API directory
│  │  ├─web           Web controllers (url.com/web/client_id)
│  │  │ ├─web         PC/H5 website
│  │  │ ├─app         App webview content
│  │  │ ├─wechatmp    Public account
│  │  │ ├─wechatapp   Mini‑Program webview content
│  │  ├─controller    Controller directory
│  │  ├─admin         Backend management
│  │  ├─tenant        Tenant management
│  │  ├─...           Create directly under controller if no backend
│  │  ├─model         Model directory
│  │  ├─view          View directory
│  │  └─...          Additional libraries
│  ├─module_name2      Another application
│  │  └─...           Same structure as above
│  └─event.php          Event definitions
│  ├─common.php         Global functions
│  ├─provider.php       Service provider definitions
│  ├─service.php        Global system services
│  └─middleware.php    Global middleware
├─config                Global config directory
│  ├─app.php            Application config
│  ├─config.php         Third‑party integration config
│  ├─filesystem.php     OSS/COS/Qiniu/local upload keys
│  └─...                Other configs (see ThinkPHP manual)
├─base                  Core SAPI++ directory
│  ├─logic                 System extensions
│  ├─model                 Base models
│  │  ├─SystemAdmin.php    System administrator
│  │  ├─SystemAgent.php    Agent
│  │  ├─SystemApp.php      Application installer
│  │  ├─SystemApps.php     Tenant applications
│  │  ├─SystemAppsClient.php Tenant app integration
│  │  ├─SystemAppsConfig.php Tenant app config
│  │  ├─SystemAppsRelease.php Tenant app release status
│  │  ├─SystemTenant.php    Tenant management
│  │  ├─SystemTenantBill.php Tenant billing
│  │  ├─SystemUser.php      Tenant members
│  │  ├─SystemUserRuid.php  Member login IDs
│  │  ├─SystemUserRelation.php Tenant relationships
│  │  ├─BaseController.php Base controller
│  │  ├─BaseModel.php      Base model
│  │  ├─AdminController.php Admin base controller
│  │  ├─ApiController.php   API base controller
│  │  ├─TenantController.php Tenant base controller
│  │  ├─WebController.php   Web base controller
│  │  └─...                Other system directories
├─public                Public web directory (exposed)
│  ├─static             Module‑specific static files (writable, customizable)
│  │  ├─module_name     Matches app/module_name
│  │  │  ├─logo.png     Default logo
│  │  │  └─...          Additional resources
│  ├─res                Local resource upload directory (writable)
│  └─install            Installation script (remove after use)
├─platform              SAPI++ management platform
├─extend                Extension libraries
├─runtime               Runtime directory (writable)
├─vendor                Composer libraries
├─.example.env          Example environment file
├─composer.json         Composer definition
├─LICENSE.txt           License file
├─README.md             Readme
└─think                 CLI entry point