The last modifications of this post were around 10 years ago, some information may be outdated!
This isn't a "production endorsed" solution, but it's something that can get you by in a pinch. After reformatting my MacBook Pro and installing PHP 5.5 and MySQL 5.6 on it, I found that an old CodeIgniter application I was supporting wouldn't run for me. After some error diagnosis (and code hacking) I was able to make things work by doing the following:
1. Change your config/database.php file to use the "mysqli" database driver. The "mysql" one is for older versions and will call deprecated methods if used.
- Rename and remap your "Yield" class. In PHP 5.5 there is is a new yield language construct, and that will interfere with the Yield class/method that CodeIgniter uses. To fix this:
- Modify your hooks/Yield_hook.php file and rename the class to "Yield_hook"
- In your config/hooks.php file, change the first hook mapping from class "Yield" to "Yield_hook"
Once you've saved those files, you should be up and running.