Because CodeIgniter is faster, lighter and the least like a framework.
Rasmus Lerdorf (the creator of PHP) about CodeIgniter
I found CodeIgniter the lightest framework out there and it doesn't impose too many restrictions.
Rasmus Lerdorf (the creator of PHP) about CodeIgniter
CodeIgniter is MVC PHP framework.
about CodeIgniter:
- Free - Open Source
- Easy to start - Minimal learning curve
- Light-weight and fast MVC PHP framework - Small footprint
- Great performance
- Clear awesome documentation - You don't need books with such documentation
- Very extensible - No need to hack the core
Fat models and thin Controllers.
Library must be used in the Models and sometimes in the Controllers. Helper must be used in the View.