CodeIgniter vs Symfony
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A lightweight PHP framework for building web applications, originally from EllisLab.
Open source · MIT
A PHP framework for building web and console applications, plus reusable PHP components.
The short answer
Choose CodeIgniter if you need…
- PHP developers who want a framework with a relatively small footprint
- Developers maintaining or extending an existing CodeIgniter codebase
- Students learning how PHP web frameworks are structured
Choose Symfony if you need…
- PHP developers building web applications that need a structured framework
- Teams that want semantic versioning and Long Term Support (LTS) releases
- Developers who want reusable PHP components without adopting the full framework
- Projects that need console applications as well as web applications
Side-by-side
| CodeIgniter | Symfony | |
|---|---|---|
| Type | Framework | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 18.2k | 31.2k |
| Setup difficulty | Intermediate | Intermediate |
| How you get it | Clone and build from source | Install with a package manager |
| Main language | PHP | PHP |
| Last code update | 2 years ago | 4 days ago |
What each one is
CodeIgniter
CodeIgniter is an open-source framework written in PHP that gives developers a structured starting point for building websites and web applications. It is described in its metadata as an open source PHP framework originally from EllisLab. The README provided here was truncated and empty, so this entry relies mainly on the repository description and topics.
Symfony
Symfony is a PHP framework that gives developers a structured base for building websites, web applications, and command-line tools. It also ships as a set of reusable PHP components that can be used on their own. The README says it is used by thousands of web applications and by many popular PHP projects.
Best for
CodeIgniter
- PHP developers who want a framework with a relatively small footprint
- Developers maintaining or extending an existing CodeIgniter codebase
- Students learning how PHP web frameworks are structured
Symfony
- PHP developers building web applications that need a structured framework
- Teams that want semantic versioning and Long Term Support (LTS) releases
- Developers who want reusable PHP components without adopting the full framework
- Projects that need console applications as well as web applications
Strengths
CodeIgniter
- MIT license, which permits broad commercial and personal use
- Widely starred open-source project (18,152 stars at time of capture)
- Targets PHP 7 and PHP 8 according to its topics
Symfony
- Widely used, with a large community and many contributors according to the README
- Follows semantic versioning and publishes LTS versions for predictable upgrades
- Has extensive documentation, including a Getting Started guide and a best practices reference
Not ideal for
CodeIgniter
- Teams that need detailed, verified documentation from the README alone, since the README supplied here was empty
- Projects that require a specific modern PHP version or feature set not confirmed in the available metadata
Symfony
- People who do not work with PHP, since the project is written for PHP developers
- Complete beginners to programming, as the framework assumes familiarity with PHP and Composer
- Very small one-off scripts where a full framework adds more setup than it saves
Trade-offs
CodeIgniter
- README was truncated, so features and setup details could not be verified here
- No published release listed, so version stability is unclear from this data
- Last push date is July 2024, so current maintenance activity should be checked
Symfony
- Requires working knowledge of PHP and Composer, so it is not a gentle first step for newcomers
- The README is mostly links, so details of specific features must be checked in the official docs
- Feature set and setup depend on the chosen components and version, which the README does not detail
Getting started
CodeIgniter
Clone the repository
git clone https://github.com/bcit-ci/CodeIgniter.gitSymfony
Install Symfony with Composer (see official setup docs for the exact command)
git clone https://github.com/symfony/symfonyFrequently asked questions
What is the difference between CodeIgniter and Symfony?
CodeIgniter: A lightweight PHP framework for building web applications, originally from EllisLab. Symfony: A PHP framework for building web and console applications, plus reusable PHP components. CodeIgniter suits php developers who want a framework with a relatively small footprint, while Symfony suits php developers building web applications that need a structured framework.
Are CodeIgniter and Symfony free?
CodeIgniter: Free and open source. Symfony: Free and open source.
Is CodeIgniter or Symfony more popular?
Symfony has more GitHub stars (31.2k) than CodeIgniter (18.2k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to CodeIgniter and Symfony?
Other options people compare them with include Slim.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.