检查多级文件夹是 dir

Question

当用户输入一个新的文件夹名称，并且所有准备好的名称存在于子文件夹和主文件夹中时，将返回错误。

目前即使子文件夹等中不存在文件夹也会返回错误。

问题我怎样才能使它可以检查主目录和子文件夹并在退出时返回错误否则让我创建它。

文件夹名称的帖子是$this->input->post('folder')

检查是否存在同名的子文件夹。

if (!$json) {

    $results = scandir($DIR_IMAGE);

    foreach ($results as $result) {
        if ($result === '.' or $result === '..') continue;

        if (is_dir($DIR_IMAGE . '/' . $result)) {
            $json['error'] = 'This folder name all ready';
        }
    }
}

功能齐全

public function folder() {

    $json = array();

    $DIR_IMAGE = FCPATH . 'images/';

    if ($this->input->get('directory')) {
        $directory =  $this->input->get('directory') . '/';
    } else {
        $directory = 'catalog/';
    }

    if (!$json) {
        $arrPathParts = explode('/', $directory);

        if (count($arrPathParts) > 3) {
            $json['error'] = 'You can not create a new folder here try back one level.';
        }
    }

    if (!$json) {

        $re = '/\W/'; // \W matches any non-word character (equal to [^a-zA-Z0-9_])

        $str = $this->input->post('folder');

        $is_correct_foldername = !preg_match($re, $str) ? true : false; 

        if (!$is_correct_foldername) {
            $json['error'] = 'You have some symbols or no spaces that are not allowed';
        }
    }

    // Checks if any subfolders exists with same name.

    if (!$json) {

        $results = scandir($DIR_IMAGE);

        foreach ($results as $result) {
            if ($result === '.' or $result === '..') continue;

            if (is_dir($DIR_IMAGE . '/' . $result)) {
                $json['error'] = 'This folder name all ready';
            }
        }
    }

    // Every thing passes now will create folder
    if (!$json) {
        mkdir($DIR_IMAGE . $directory . $this->input->post('folder'), 0777, true);
        $json['success'] = 'Your folder is now created!';
    }

    $this->output->set_content_type('Content-Type: application/json');
    $this->output->set_output(json_encode($json));        
}

Answer 1

在您的代码中：

if (!$json) {

    $results = scandir($DIR_IMAGE);

    foreach ($results as $result) {
        if ($result === '.' or $result === '..') continue;

        if (is_dir($DIR_IMAGE . '/' . $result)) {
            $json['error'] = 'This folder name all ready';
        }
    }
}

您只是检查从 scandir() 返回的每个目录名称是否是一个目录 - 始终是 true。

假设您要检查的目录名称是$this->input->post('foldername')，您可以这样做：

if (!$json) {

    $results = scandir($DIR_IMAGE);

    foreach ($results as $result) {
        if ($result === '.' or $result === '..') continue;

        if (is_dir($DIR_IMAGE . '/' . $result) && ($result == $this->input->post('foldername'))) {
            $json['error'] = 'This folder name all ready';
        }
    }
}

附带说明，您应该尝试使用DIRECTORY_SEPARATOR 常量而不是'/' 目录。

最后，还要注意目录名称的大小写可能是不同操作系统上的一个因素。

Answer 2

我现在有了一个使用 RecursiveIteratorIterator 和数组的解决方案

public function folder() {

    $json = array();

    $DIR_IMAGE = FCPATH . 'images/';

    if ($this->input->get('directory')) {
        $directory =  $this->input->get('directory') . '/';
    } else {
        $directory = 'catalog/';
    }

    if (!$json) {
        $arrPathParts = explode('/', $directory);

        if (count($arrPathParts) > 3) {
            $json['error'] = 'You can not create a new folder here try back one level.';
        }
    }

    if (!$json) {

        $re = '/\W/'; // \W matches any non-word character (equal to [^a-zA-Z0-9_])

        $str = $this->input->post('folder');

        $is_correct_foldername = !preg_match($re, $str) ? true : false; 

        if (!$is_correct_foldername) {
            $json['error'] = 'You have some symbols or no spaces that are not allowed';
        }
    }

    // Checks if any subfolders exists with same name. @todo clean paths

    if (!$json) {

        $root = $DIR_IMAGE . 'catalog/';

        $iter = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($root, RecursiveDirectoryIterator::SKIP_DOTS),
            RecursiveIteratorIterator::SELF_FIRST,
            RecursiveIteratorIterator::CATCH_GET_CHILD // Ignore "Permission denied"
        );

        $paths = array($root);

        foreach ($iter as $path => $dir) {
            if ($dir->isDir()) {
                $paths[] = basename($path);
            }
        }

        if (in_array($this->input->post('folder'), $paths)) {
            $json['error'] = 'You have all ready created a folder called ' . $this->input->post('folder') . ' in one of your directories!';
        }
    }

    if (!$json) {
        mkdir($DIR_IMAGE . $directory . $this->input->post('folder'), 0777, true);
        $json['success'] = 'Your folder is now created!';
    }

    $this->output->set_content_type('Content-Type: application/json');
    $this->output->set_output(json_encode($json));        
}