codeigniter中的APPPATH是什么

Here is an example.

class My_Loader extends CI_Loader {
    parent::__construct();
    include(APPPATH.'config/jscss.php');
}

what is the 'APPPATH' above?

APPPATH is your application folder

Copy jscss.php file to /application/config/ folder.

/application
  - /config
     - jscss.php
  - /controllers
  - /cache
  - /core
  - etc..
/system
index.php

path to your application folder.

Path upto your Application folder

PAth on your Application->Your Project

Description

APPPATH is a codeigniter constant. It contains value of the full path to your application folder.

Value

/path/to/your/codeigniter/application/

Note: The value of the constant has a slash character / at the end. This is crucial for concatenation purposes.