Question

可能重复：
Displaying folders and making links of those folders

我正在尝试使用RecursiveDirectoryIterator创建一个简单的文件浏览器，但似乎无法弄清楚...有什么帮助吗？

$cwd = '/path/to/somewhere';
if(isset($_GET['path']) && is_dir($cwd.$_GET['path'])) {
    $cwd .= $_GET['path'];
}

$dir = new RecursiveDirectoryIterator($cwd);
$iter = new RecursiveIteratorIterator($dir, RecursiveIteratorIterator::SELF_FIRST);
while($iter->valid()) {
    // skip unwanted directories
    if(!$iter->isDot()) {
        if($iter->isDir()) {
            // output linked directory along with the number of files contained within
            // for example: some_folder (13)
        } else {
            // output direct link to file
        }
    }
    $iter->next();
}

不确定这是否是最好的方法，但我的印象是RecursiveDirectoryIterator比opendir（）和glob（）方法都要快。

Answer 1

SELF_FIRST和CHILD_FIRST与RecursiveDirectoryIterator毫无关系RecursiveIteratorIterator

如果你跑

$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir), RecursiveIteratorIterator::SELF_FIRST );

foreach ( $iterator as $path ) {
    if ($path->isDir()) {
        print($path->__toString() . PHP_EOL);
    } else {
        print($path->__toString() . PHP_EOL);
    }

你会得到

...\htdocs\lab\stockoverflow\css
...\htdocs\lab\stockoverflow\css\a.css
...\htdocs\lab\stockoverflow\css\b.css
...\htdocs\lab\stockoverflow\css\c.css
...\htdocs\lab\stockoverflow\css\css.php
...\htdocs\lab\stockoverflow\css\css.run.php

如果您将其更改为RecursiveIteratorIterator::CHILD_FIRST

...\htdocs\lab\stockoverflow\css\a.css
...\htdocs\lab\stockoverflow\css\b.css
...\htdocs\lab\stockoverflow\css\c.css
...\htdocs\lab\stockoverflow\css\css.php
...\htdocs\lab\stockoverflow\css\css.run.php
...\htdocs\lab\stockoverflow\css

你能看到当前文件夹的位置差异

使用RecursiveDirectoryIterator

1 个答案: