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[toc] # 准备好后端的现成套路 后端上,Codeigniter4已经提供了一个美好的函数来实现文件夹的递归读取,简单来说,就是文件夹里面的文件夹里面的文件夹里面的……都能读取。 得益于php7对GBK中文目录的支持,codeigniter的 `Filesystem Helper` ,就能得到全部目录(包含子目录)的数组: [https://bcit-ci.github.io/CodeIgniter4/helpers/filesystem_helper.html](https://bcit-ci.github.io/CodeIgniter4/helpers/filesystem_helper.html) Sub-folders contained within the directory will be mapped as well. If you wish to control the recursion depth, you can do so using the second parameter (integer). A depth of 1 will only map the top level directory: 第二个参数为递归深度,当深度设置为1的时候,只会显示该文件夹的根目录文件: ```php $map = directory_map('./mydirectory/', 1); ``` By default, hidden files will not be included in the returned array. To override this behavior, you may set a third parameter to true (boolean): 默认情况下,隐藏文件不会显示到数组中。当需要的时候,将第三个参数设置为True。 ```php $map = directory_map('./mydirectory/', FALSE, TRUE); ``` Each folder name will be an array index, while its contained files will be numerically indexed. Here is an example of a typical array: 返回的数组样式: ```php Array ( [libraries] => Array ( [0] => benchmark.html [1] => config.html ["database/"] => Array ( [0] => query_builder.html [1] => binds.html [2] => configuration.html [3] => connecting.html [4] => examples.html [5] => fields.html [6] => index.html [7] => queries.html ) [2] => email.html [3] => file_uploading.html [4] => image_lib.html [5] => input.html [6] => language.html [7] => loader.html [8] => pagination.html [9] => uri.html ) ``` # 准备好前端的现成套路 采用 [zui.sexy](http://zui.sexy/) 的 「树形菜单」现成方案。 [http://zui.sexy/#view/tree](http://zui.sexy/#view/tree) ![](https://box.kancloud.cn/3f3502ee47da8d80de697c98444345ed_710x435.png) # 在Codeigniter中开工 首先,我在 `e:\xampp\htdocs\public\data\` 中新建了如下文件和文件夹,我日后的所有文件都会放在 `data` 这个文件夹中: ``` data --20171015\ ---- a.txt ---- b.txt ---- c.txt --20171016\ ---- a.txt ---- b.txt ---- c.txt --20171017\ ---- a.txt ---- b.txt ---- c.txt --20171018\ ---- a.txt ---- b.txt ---- c.txt ``` 然后,我在 `Controller` 中新建一个 `Kanban.php`: `e:\xampp\htdocs\application\Controllers\Kanban.php` ``` <?php namespace App\Controllers; use CodeIgniter\Controller; class Kanban extends Controller{ function __construct(){ helper('filesystem'); } public function index(){ $map = directory_map('./'); d($map); } }//kanban ``` `directory_map('./')` 里面的 `./` 表示 `e:\xampp\htdocs\public\` ; 所以,当我要显示 `public\data` 文件夹内容的时候: ``` $map = directory_map('./data'); ``` ![](https://box.kancloud.cn/d302b9952d7139be10dd6f7a96683b61_641x310.png) (完)