CodeIgniter 路径常量定义

Posted 2023-05-08

【中文标题】CodeIgniter 路径常量定义

【英文标题】：CodeIgniter path constants definitions

【发布时间】：2012-12-09 03:33:05

【问题描述】：

我遇到过这个页面

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

有人可以向我解释一下以下常量的作用：

EXT
FCPATH
SELF
BASEPATH
APPPATH

谢谢

【问题讨论】：

那些不是函数，它们是常量。

【参考方案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的第 196 行开始

【参考方案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

【参考方案3】：

自我 = index.php

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

当您想要包含应用程序文件夹中的某些内容时使用APPPATH = C:\xampp\htdocs\your_root_folder\application\

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