PHP如何读取子目录和循环文件？

Question

我需要创建一个循环遍历子目录中的所有文件。你能帮我这样构造我的代码吗:

$main = "MainDirectory";
loop through sub-directories {
    loop through filels in each sub-directory {
        do something with each file
    }
};

Answer 1

使用RecursiveDirectoryIterator与 RecursiveIteratorIterator 结合使用。

$di = new RecursiveDirectoryIterator('path/to/directory');
foreach (new RecursiveIteratorIterator($di) as $filename => $file) {
    echo $filename . ' - ' . $file->getSize() . ' bytes <br/>';
}