php CodeIgniter 路径常量定义
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CodeIgniter path constants definitions
提问by lomse
I have come across this page
我遇到过这个页面
https://www.codeigniter.com/user_guide/general/reserved_names.html
Could someone please explain to me what following constants do:
有人可以向我解释以下常量的作用：
EXT
FCPATH
SELF
BASEPATH
APPPATH
Thanks
谢谢
回答by swatkins
These constants are each defined in the index.phppage:
这些常量都在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.'/');
}
Starting at line 196 on https://github.com/EllisLab/CodeIgniter/blob/develop/index.php
从https://github.com/EllisLab/CodeIgniter/blob/develop/index.php上的第 196 行开始
回答by SubRed
You can find its short definition in index.php on the root of your CI folder.
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
回答by Mohammad Khalik Shaikh
SELF= index.php
自= index.php
Use when you want to include something from your root folder
FCPATH= C:\xampp\htdocs\your_root_folder\
当您想要包含根文件夹中的某些内容时使用
FCPATH= C:\xampp\htdocs\your_root_folder\
Use when you want to include something from your application folder
APPPATH= C:\xampp\htdocs\your_root_folder\application\
当您想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\
BASEPATH= C:\xampp\htdocs\your_root_folder\system\
