これが、動作する Codeigniter ディレクトリ構造を理解する方法です。Codeigniter 2.1.2 を使用しています。各ディレクトリの使い方を誤解していませんか? 私が忘れたことはありますか?
-+ /application/
|
|-+ /cache/ Used for caching pages if it is enabled
|-+ /config/ Contains the configuration files for this project
|-+ /controllers/ All of your controllers are saved here
|-+ /core/ Used for modifying the core Codeigniter classes
|-+ /errors/ Handles your errors and their output
|-+ /helpers/ Contains your own functions
|-+ /hooks/ Used for running code at the certain points in the routing process
|-+ /language/ Occasionally used for translating parts of your project into different languages
|-+ /libraries/ Contains your own classes
|-+ /logs/ When you log any sort of notice it is saved inside a file in here
|-+ /models/ All of your models are saved here
|-+ /third_party/ Basically another name for plugins which go here
|-+ /views/ Your views are saved here normally organised by controller inside a new directory
-+ system/ Never go in here instead use the core directory inside /application/
-+ index.php The front controller for your project
ありがとう!