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Yii2 Dev Laravel Package
yiisoft/yii2-dev
Yii 2 is a fast, secure, and efficient PHP framework for building modern web applications. It ships with sensible defaults, is flexible and easy to customize, and provides a solid foundation for development.
Yii 2 is a fast, secure, and efficient PHP framework that provides a solid foundation for modern web applications. It works out of the box with sensible defaults on PHP 7.4+ (best on PHP 8) and remains flexible enough to adapt to projects of any size.
- Performance-focused architecture with lazy loading and caching
- Built-in security: CSRF protection, input validation, password hashing
- Gii code generator for rapid model and controller scaffolding
- Extensible MVC with ActiveRecord, migrations, and console tools
- Complete documentation: Definitive Guide, API reference, and PDF
Frequently asked questions about Yii2 Dev
- Can I install yiisoft/yii2-dev with Composer inside a Laravel application?
- You can autoload it, but you should not boot it inside a Laravel request. Yii 2 ships a complete parallel runtime with its own DI container, service locator, error handler, session and CSRF handling, asset pipeline, view renderer and console runner, so co-residency gives you two containers and competing global state. There is no service provider, facade or package auto-discovery to bridge the two. Treat this as a framework-level decision rather than a package install.
- What is the difference between yiisoft/yii2 and yiisoft/yii2-dev?
- yiisoft/yii2-dev is the monorepo distribution of the Yii 2 full-stack MVC framework, published from the main development repository. It currently shows zero Composer dependents, which is expected for a dev monorepo package but also means nothing in a typical Laravel dependency graph pulls it in. Applications normally depend on yiisoft/yii2 rather than the dev package.
- What PHP versions does Yii 2 support, and does it work with recent Laravel releases?
- Yii 2 requires PHP 7.4 or later and works best on PHP 8; recent 2.0.x releases focus on PHP 8.5 and 8.6 compatibility plus static analysis cleanup. There is no Laravel version compatibility story, because Yii is a framework rather than an Illuminate package and implements no Illuminate contracts. Evaluate its PHP constraint separately from your Laravel version.
- Can I use Yii 2 components like ActiveRecord or its DI container inside Laravel?
- The namespaces do not collide, so both trees can be autoloaded, but Yii components assume Yii::$app exists. Instantiating even one component tends to pull in the application bootstrap and, through it, the rest of the framework. The clean seams are HTTP/API contracts, a shared database, a namespaced Redis instance and standards-based auth such as OIDC or JWT instead of Yii's web user.
- Is Yii 2 still actively maintained?
- Yes, but it is in maintenance mode: releases 2.0.52 through 2.0.55 are dominated by PHP-version compatibility work, PHPStan and Psalm annotation cleanup, obsolete code removal and bug fixes. Feature velocity has moved to Yii 3, which creates a second migration horizon you should weigh if you are choosing a framework now. Maturity signals remain strong, including roughly 14.3k GitHub stars, a Definitive Guide plus API reference, and active build, static-analysis and Codecov CI.
- What is CVE-2026-39850 and which Yii 2 version fixes it?
- It is a security issue fixed in Yii 2.0.55 involving internal variable isolation in View::renderPhpFile() and ErrorHandler::renderFile(), preventing parameter collisions from overriding included file paths. Any Yii application that renders user-influenced templates or dynamic error pages should be on 2.0.55 or later. If you inherit a Yii codebase, audit and pin the version before anything else.
- How should I integrate Yii 2 with an existing Laravel application?
- Run the Yii app as a separate service behind an API or queue boundary so it owns its routes, container, sessions and error handling, and let Laravel consume it over HTTP. If Yii 2 is the incumbent, use a strangler fig pattern: front it with Laravel routing or a proxy and migrate domain by domain against a shared database. Reject at review any design that boots both frameworks in one process.
- What license does Yii 2 use, and is it safe for commercial closed-source projects?
- It is BSD-3-Clause, which is clean for commercial closed-source use and usually low-friction in legal review. Supply chain signals are healthy: a documented private security reporting workflow, Open Collective funding and a long release history. Confirm attribution requirements with your own legal team as usual.
- How do I install Yii 2, and is composer require enough?
- Composer gets you the code, but the supported path is the Definitive Guide's installation chapter, which covers the application template, entry scripts and configuration. The package requires PHP 7.4 or later and is best on PHP 8. For a Laravel-oriented audit, note that there is no service provider, facade or auto-discovery entry to inspect.
- Is Yii 2 a realistic alternative to Laravel for a new project?
- It is a credible full-stack framework with sensible defaults, but the ecosystem around it is the deciding factor: the Yii talent pool is materially smaller than Laravel's or Symfony's, and most static analysis, observability and CI templates are Laravel-shaped. If you deliberately pick Yii 2 over Yii 3, you are accepting two migration horizons, so document the reasoning and assign a long-term owner. For teams already on Laravel, keeping Yii at an API boundary is the lower-risk option.
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