具有递归迭代器的多维目录列表 - Multidimensional Directory List with Recursive iterator

Multidimensional Directory List with Recursive iterator

本文关键字：列表递归迭代器 | 更新日期: 2023-09-27

我试图获得多维数组的目录格式如下:

[
    {
        "text": "another_folder",
        "href": "gui'/default'/uploads'/another_folder",
        "depth": 0
    },
    {
        "text": "subfold",
        "href": "gui'/default'/uploads'/subfold",
        "depth": 0,
        "nodes": {
                   "text": "sub-subfold",
                   "href": "gui'/default'/uploads'/subfold'/sub-subfold",
                   "depth": 1,
                  }
    }
]

我想使用递归迭代器。到目前为止，我所做的是获得给定路径中列出的所有目录。我需要进入到children，也就是我堆叠的地方。

public function list_folders($folder_path='') {
    if(!$folder_path) $folder_path = $this->upl_path;
    $iterator = new RecursiveIteratorIterator(
                new RecursiveDirectoryIterator($folder_path),
                RecursiveIteratorIterator::SELF_FIRST);
    $iterator->setFlags(RecursiveDirectoryIterator::SKIP_DOTS);
    $r = array();
    $counter = 0
    foreach ($iterator as $splFileInfo) {
      if($splFileInfo->isDir()) {
        $r[$counter] = array(
          'text' => $splFileInfo->getFilename(),
          'href' => str_replace('''','/',$splFileInfo->getPathname())
        );
        if(How to check if it has children) {
          $result[$counter] += array('nodes'=> CALL RECURSIVE HERE ? );
      }
      $counter++;
    }

    echo json_encode($r,JSON_PRETTY_PRINT);
}

我很乐意使用任何想法或帮助。

您的代码几乎是功能性的，但是它缺少几个关键点。我修改了你的代码，使其工作，并添加了一些注释，我希望能帮助你理解你错过了什么:

class FolderListing
{
    public function list_folders($folder_path = '', $depth = 0)
    {
        if (!$folder_path) $folder_path = $this->upl_path;
        $iterator = new IteratorIterator(new DirectoryIterator($folder_path));
        $r = array();
        foreach ($iterator as $splFileInfo) {
            if ($splFileInfo->isDot()) {
                continue;
            }
            // we need to do this for both folders and files
            $info = array(
                'text' => $splFileInfo->getFilename(),
                'href' => str_replace('''', '/', $splFileInfo->getPathname()),
                'depth' => $depth
            );
            // is we have a directory, try and get its children
            if ($splFileInfo->isDir()) {
                // !!! I recommend to do an echo $splFileInfo->getPathname() here
                // to see the order in which recursion works !!!
                $nodes = $this->list_folders($splFileInfo->getPathname(), $depth + 1);
                // only add the nodes if we have some
                if (!empty($nodes)) {
                    $info['nodes'] = $nodes;
                }
            }
            // add the info to the array. No need for a counter :)
            $r[] = $info;
        }
        // the return is important to be able to build the multi dimensional array
        return $r;
    }
}
$test = new FolderListing();
$ret = $test->list_folders('./test'); // change this to whatever you want
var_dump($ret);

祝你好运!