CodeIgniter 路径常量定义 [英] CodeIgniter path constants definitions
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问题描述
我遇到过这个页面
https://www.codeigniter.com/user_guide/general/reserved_names.html
有人可以向我解释以下常量的作用:
Could someone please explain to me what following constants do:
EXT
FCPATH
SELF
BASEPATH
APPPATH
谢谢
推荐答案
这些常量分别在 index.php
页面中定义:
These constants are each defined in the index.php
page:
/*
* -------------------------------------------------------------------
* 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/的第 196 行开始index.php
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