php RecursiveDirectoryIterator目录删除问题

debugcn 发表于 Dev

安景

尝试使用目录迭代器删除空文件夹，但是总是会出现错误：删除目录后，访问被拒绝（代码：5）。

我在这里做错了什么？

$directory_iterator = new RecursiveDirectoryIterator($images_path, RecursiveDirectoryIterator::SKIP_DOTS);
    $objects = new RecursiveIteratorIterator($directory_iterator, RecursiveIteratorIterator::SELF_FIRST);
    try {

        echo "Removing empty folders...\n";

        foreach ($objects as $object) {

            if ($object->isDir()) {
                echo $object->getRealPath()."\n";
                $isDirEmpty = new FilesystemIterator($object->getRealPath());
                if (!$isDirEmpty->valid()){
                    echo $object->getFilename() . " - directory removed\n";
                    $path = $object->getRealPath();
                    rmdir($path);
                }
            }
        }
    } catch(Exception $e){
        echo $e->getMessage();
    }

紫菜

目录迭代器仍然“记住”该文件夹存在，因此尝试读取其内容。但是，当您删除它时，迭代器将失败。

要解决此问题，您可以将空文件夹路径放入数组中，然后在主循环完成后将其删除。

$empty_dirs = [];
$directory_iterator = new RecursiveDirectoryIterator($images_path, RecursiveDirectoryIterator::SKIP_DOTS);
$objects = new RecursiveIteratorIterator($directory_iterator, RecursiveIteratorIterator::SELF_FIRST);
try {

    echo "Removing empty folders...\n";

    foreach ($objects as $object) {

        if ($object->isDir()) {
            echo $object->getRealPath()."\n";
            $isDirEmpty = new FilesystemIterator($object->getRealPath());
            if (!$isDirEmpty->valid()){
                echo $object->getFilename() . " - directory removed\n";
                $path = $object->getRealPath();
                //rmdir($path);
                $empty_dirs[] = $path;
            }
        }
    }
} catch(Exception $e){
    echo $e->getMessage();
}

foreach ($empty_dirs as $path)
{
    rmdir($path);
}

没有数组的另一种方法：

$empty_dir = null;
$directory_iterator = new RecursiveDirectoryIterator($images_path, RecursiveDirectoryIterator::SKIP_DOTS);
$objects = new RecursiveIteratorIterator($directory_iterator, RecursiveIteratorIterator::SELF_FIRST);
try {

    echo "Removing empty folders...\n";

    foreach ($objects as $object) {

        if ($object->isDir()) {
            echo $object->getRealPath()."\n";
            $isDirEmpty = new FilesystemIterator($object->getRealPath());
            if (!$isDirEmpty->valid()){
                echo $object->getFilename() . " - directory removed\n";
                $path = $object->getRealPath();
                if ($empty_dir !== null)
                    rmdir($empty_dir);
                $empty_dir = $path;
            }
        }
    }
} catch(Exception $e){
    echo $e->getMessage();
}

if (!is_null($empty_dir))
    rmdir($empty_dir);

本文收集自互联网，转载请注明来源。

如有侵权，请联系[email protected] 删除。