1.需求

CI在linux上无法加载model

2.原因

因为linux区分大小写，且model文件名首字符要大写。

As said in the comments : Your model‘s filename must start with an uppercase. In your case, Ion_auth_model.php.

参考资料：http://stackoverflow.com/questions/28506163/troubleshooting-codeigniter-unable-to-locate-the-model-you-have-specified-e

CI加载model的问题