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+--- Thread: i would like to upgrade project from 1 to last version of ci (/showthread.php?tid=64815)
i would like to upgrade project from 1 to last version of ci - allmylifesogood - 03-29-2016
long time, i never touch CI. i have used CI to build 2-3 projects. it's very good framework for me. today, i need to update old project that it's made by CI 1.0. i don't know exactly that it's impossible to upgrade to be latest version of CI or not. can you tell me that it's possible to do like that?. thanks in advance
RE: i would like to upgrade project from 1 to last version of ci - cartalot - 03-30-2016
we can't see the code so no one is going to be able to tell you but it should be doable. my suggestions would be 1) get codeigniter 3 running on your server. 2) add the database credentials and confirm it works 3) carefully work through the tutorial in the codeigniter 3 manual. At that point you will be familiar with CI 3 and you won't waste a bunch of time trying to chase down configuration issues.
Then take one controller (and its dependent models and views) from your CI 1 project and integrate it into CI 3.
Thats going to give you a sense of what kind of changes you will need to make. Create a list of search / replace for code changes and update the code with an editor like Sublime that can search/replace across the entire project. Then move one controller at a time into the new project, testing as you go.
the other thing to keep in mind is that in your CI 1 project - apart from the code changes to move up to CI 3 - if this was originally PHP 4 code then there might be changes etc to conform to PHP 5.