Laravel is suitable for medium and large projects, with comprehensive functions and rich ecology, and is suitable for long-term maintenance; CodeIgniter is suitable for small projects, with light weight and flexible, and has a low learning threshold. 1. CodeIgniter is easy to get started, suitable for beginners and short-cycle projects; Laravel has many functions but a steep learning curve, suitable for complex systems. 2. CodeIgniter has better performance, and Laravel can improve performance through caching, which is suitable for advanced functional needs. 3. Laravel has an active community, many expansion packages, and problem solving is faster; CodeIgniter is suitable for independent development. 4. Laravel has a complete built-in security mechanism, good maintenance, and clear version updates; CodeIgniter requires more manual protection.

CodeIgniter and Laravel are both commonly used frameworks in PHP development, and each has its own advantages. If you are confused about these two when selecting models, the core difference lies in positioning and feature richness: Laravel is more comprehensive and modern, suitable for medium and large projects; CodeIgniter is lighter and flexible, suitable for projects that need to be quickly started or small .

The following is based on several actual usage scenarios to help you more clearly determine which one to use.

1. Learning threshold vs. feature richness

• CodeIgniter is easy to get started with, clear documentation, and is suitable for developers who are new to the MVC framework.
• Laravel has many functions but the learning curve is slightly steep. For example, Eloquent ORM, Blade template engine, Artisan command line tools, etc., all require a certain amount of time to get familiar with.

If you are a novice or have a short project cycle and want to go online as soon as possible, CodeIgniter may be more suitable for you. And if you want long-term maintenance and complex functions (such as e-commerce systems and backend management systems), Laravel provides more out-of-the-box functions.

2. Comparison of performance and flexibility

• CodeIgniter's performance is generally considered faster than Laravel because it has fewer components and lighter dependencies.
• Although Laravel is a little "heavier", it can greatly improve performance through caching mechanisms (such as configuration cache and routing cache).

In actual development, the performance gap between the two is often not obvious in modern server environments, unless you are doing a high concurrency and extreme optimization system.

Select suggestions:

• If you have extremely high performance requirements and don't want to spend too much effort on optimization, CodeIgniter is a safe choice.
• If you need queues, event broadcasts, API authentication and other functions, Laravel is more troublesome.

3. Community ecology and expansion capabilities

• Laravel has a huge community and a wealth of expansion packages (the number on Packagist is far greater than CodeIgniter).
• The CodeIgniter community is relatively smaller. Although there are many plug-ins, the update frequency and activity are not as good as Laravel.

This means:

• It is easier to find answers or ready-made solutions when encountering problems
• CodeIgniter is more suitable for those who like to implement functions by themselves

For example: if you want to integrate a payment gateway, Laravel may already have mature packages to use directly, while CodeIgniter may require you to write the interface package yourself.

4. Safety and maintenance

• Laravel provides many security features, such as CSRF protection, SQL injection filtering, user authentication system, etc.
• CodeIgniter also provides basic security protection, but many details need to be paid attention to by developers.

In addition, Laravel has a clear version life cycle and support plan, and the upgrade route is clear; while CodeIgniter updates are slower, but they are also more stable.

Overall, Laravel is more suitable for teams pursuing functional integrity and development efficiency, while CodeIgniter is more suitable for projects that focus on lightweight and control .

Choose based on your team's technology stack, project scale and development habits, basically that's all.

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