Question

我遇到过这个页面

https://www.codeigniter.com/user_guide/general/reserved_names.html

有人可以向我解释以下常数的作用：

EXT
FCPATH
SELF
BASEPATH
APPPATH

由于

Answer 1

这些常量分别在index.php页面中定义：

/*
 * -------------------------------------------------------------------
 *  Now that we know the path, set the main path constants
 * -------------------------------------------------------------------
 */
    // The name of THIS file
    define('SELF', pathinfo(__FILE__, PATHINFO_BASENAME));

    // The PHP file extension
    // this global constant is deprecated.
    define('EXT', '.php');

    // Path to the system folder
    define('BASEPATH', str_replace("\\", "/", $system_path));

    // Path to the front controller (this file)
    define('FCPATH', str_replace(SELF, '', __FILE__));

    // Name of the "system folder"
    define('SYSDIR', trim(strrchr(trim(BASEPATH, '/'), '/'), '/'));


    // The path to the "application" folder
    if (is_dir($application_folder))
    {
            define('APPPATH', $application_folder.'/');
    }
    else
    {
            if ( ! is_dir(BASEPATH.$application_folder.'/'))
            {
                    exit("Your application folder path does not appear to be set correctly. Please open the following file and correct this: ".SELF);
            }

            define('APPPATH', BASEPATH.$application_folder.'/');
    }

从https://github.com/EllisLab/CodeIgniter/blob/develop/index.php

上的第196行开始

Answer 2

您可以在CI文件夹根目录的index.php中找到它的简短定义。

EXT: The PHP file extension
FCPATH: Path to the front controller (this file) (root of CI)
SELF: The name of THIS file (index.php)
BASEPATH: Path to the system folder
APPPATH: The path to the "application" folder

Answer 3

SELF = index.php

当您要包含根文件夹中的内容时使用
FCPATH = C：\ xampp \ htdocs \ your_root_folder \

当您要包含应用程序文件夹中的内容时使用
APPPATH = C：\ xampp \ htdocs \ your_root_folder \ application \

BASEPATH = C：\ xampp \ htdocs \ your_root_folder \ system \

Codeigniter路径函数定义

3 个答案: