PHP的递归删除目录函数？

Question

I am using PHP to move the contents of a images subfolder

GalleryName/images/

into another folder. After the move, I need to delete the GalleryName directory and everything else inside it .

I know that rmdir() won't work unless the directory is empty. I've spent a while trying to build a recursive function to scandir() starting from the top and then unlink() if it's a file and scandir() if it's a directory, then rmdir() each empty directory as I go.

So far it's not working exactly right, and I began to think -- isn't this a ridiculously simple function that PHP should be able to do? Removing a directory?

So is there something I'm missing? Or is there at least a proven function that people use for this action?

Any help would be appreciated.

PS I trust you all here more than the comments on the php.net site -- there are hundreds of functions there but I am interested to hear if any of you here recommend one over others.

Answer 1

What about this?

function rmdir_recursive($dirPath){
    if(!empty($dirPath) && is_dir($dirPath) ){
        $dirObj= new RecursiveDirectoryIterator($dirPath, RecursiveDirectoryIterator::SKIP_DOTS); //upper dirs not included,otherwise DISASTER HAPPENS :)
        $files = new RecursiveIteratorIterator($dirObj, RecursiveIteratorIterator::CHILD_FIRST);
        foreach ($files as $path) 
            $path->isDir() && !$path->isLink() ? rmdir($path->getPathname()) : unlink($path->getPathname());
        rmdir($dirPath);
        return true;
    }
    return false;
}

Answer 2

This is the recursive function I've created/modifed and that finally seems to be working. Hopefully there isn't anything too dangerous in it.

function destroy_dir($dir) { 
    if (!is_dir($dir) || is_link($dir)) return unlink($dir); 
    foreach (scandir($dir) as $file) { 
        if ($file == '.' || $file == '..') continue; 
        if (!destroy_dir($dir . DIRECTORY_SEPARATOR . $file)) { 
            chmod($dir . DIRECTORY_SEPARATOR . $file, 0777); 
            if (!destroy_dir($dir . DIRECTORY_SEPARATOR . $file)) return false; 
        }; 
    } 
    return rmdir($dir); 
} 

Answer 3

If the server of application runs linux, just use the shell_exec() function, and provide it the rm -R command, like this:

    $realPath = realpath($dir_path);

    if($realPath === FALSE){
         throw new \Exception('Directory does not exist');
    }

    shell_exec("rm ". escapeshellarg($realPath) ." -R");

Explanation:

Removes the specified directory recursively only if the path exists and escapes the path so that it can only be used as a shell argument to avoid shell command injection.

If you wouldnt use escapeshellarg one could execute commands by naming the directory to be removed after a command.

Answer 4

I've adapted a function which handles hidden unix files with the dot prefix and uses glob:

public static function deleteDir($path) {
    if (!is_dir($path)) {
        throw new InvalidArgumentException("$path is not a directory");
    }
    if (substr($path, strlen($path) - 1, 1) != '/') {
        $path .= '/';
    }
    $dotfiles = glob($path . '.*', GLOB_MARK);
    $files = glob($path . '*', GLOB_MARK);
    $files = array_merge($files, $dotfiles);
    foreach ($files as $file) {
        if (basename($file) == '.' || basename($file) == '..') {
            continue;
        } else if (is_dir($file)) {
            self::deleteDir($file);
        } else {
            unlink($file);
        }
    }
    rmdir($path);
}

Answer 5

There is another thread with more examples here: How do I recursively delete a directory and its entire contents (files + sub dirs) in PHP?

If you are using Yii then you can leave it to the framework:

CFileHelper::removeDirectory($my_directory);

Answer 6

I prefer an enhaced method derived from the php help pages http://php.net/manual/en/function.rmdir.php#115598

 // check accidential empty, root or relative pathes
 if (!empty($path) && ...)
 {
  if (PHP_OS === 'Windows')
  {
    exec('rd /s /q "'.$path.'"');
  }
  else
  {
      exec('rm -rf "'.$path.'"');
  }
}
else
{
    error_log('path not valid:$path'.var_export($path, true));
}

reasons for my decision:

• less code
• speed
• keep it simple

Answer 7

public static function rrmdir($dir)
{
    if (is_dir($dir)) {
        $files = scandir($dir);
        foreach ($files as $file) {
            if ($file != "." && $file != "..") {
                if (filetype($dir . "/" . $file) == "dir")
                    self::rrmdir($dir . "/" . $file);
                else
                    unlink($dir . "/" . $file);
            }
        }
        reset($files);
        rmdir($dir);
    }
}