PHP recursive delete function

问题

I wrote recursive PHP function for folder deletion. I wonder, how do I modify this function to delete all files and folders in webhosting, excluding given array of files and folder names (for ex. cgi-bin, .htaccess)?

BTW

to use this function to totally remove a directory calling like this

recursive_remove_directory('path/to/directory/to/delete');

to use this function to empty a directory calling like this:

recursive_remove_directory('path/to/full_directory',TRUE);

Now the function is

function recursive_remove_directory($directory, $empty=FALSE)
{
    // if the path has a slash at the end we remove it here
    if(substr($directory,-1) == '/')
    {
        $directory = substr($directory,0,-1);
    }

    // if the path is not valid or is not a directory ...
    if(!file_exists($directory) || !is_dir($directory))
    {
        // ... we return false and exit the function
        return FALSE;

    // ... if the path is not readable
    }elseif(!is_readable($directory))
    {
        // ... we return false and exit the function
        return FALSE;

    // ... else if the path is readable
    }else{

        // we open the directory
        $handle = opendir($directory);

        // and scan through the items inside
        while (FALSE !== ($item = readdir($handle)))
        {
            // if the filepointer is not the current directory
            // or the parent directory
            if($item != '.' && $item != '..')
            {
                // we build the new path to delete
                $path = $directory.'/'.$item;

                // if the new path is a directory
                if(is_dir($path)) 
                {
                    // we call this function with the new path
                    recursive_remove_directory($path);

                // if the new path is a file
                }else{
                    // we remove the file
                    unlink($path);
                }
            }
        }
        // close the directory
        closedir($handle);

        // if the option to empty is not set to true
        if($empty == FALSE)
        {
            // try to delete the now empty directory
            if(!rmdir($directory))
            {
                // return false if not possible
                return FALSE;
            }
        }
        // return success
        return TRUE;
    }
}

回答1:

Try something like this:

$it = new RecursiveIteratorIterator(
  new RecursiveDirectoryIterator('%yourBaseDir%'),
  RecursiveIteratorIterator::CHILD_FIRST
);

$excludeDirsNames = array();
$excludeFileNames = array('.htaccess');

foreach($it as $entry) {
  if ($entry->isDir()) {
    if (!in_array($entry->getBasename(), $excludeDirsNames)) {
      try {
        rmdir($entry->getPathname());
      }
      catch (Exception $ex) {
        // dir not empty
      }
    }
  }
  elseif (!in_array($entry->getFileName(), $excludeFileNames)) {
    unlink($entry->getPathname());
  }
}

回答2:

I'm using this function to delete the folder with all files and subfolders:

function removedir($dir) {
    if (substr($dir, strlen($dir) - 1, 1) != '/')
        $dir .= '/';
    if ($handle = opendir($dir)) {
        while ($obj = readdir($handle)) {
            if ($obj != '.' && $obj != '..') {
                if (is_dir($dir . $obj)) {
                    if (!removedir($dir . $obj))
                        return false;
                }
                else if (is_file($dir . $obj)) {
                    if (!unlink($dir . $obj))
                        return false;
                }
            }
        }
        closedir($handle);
        if (!@rmdir($dir))
            return false;
        return true;
    }
    return false;
}

$folder_to_delete = "folder"; // folder to be deleted

echo removedir($folder_to_delete) ? 'done' : 'not done';

Iirc I got this from php.net

回答3:

You could provide an extra array parameter $exclusions to recursive_remove_directory(), but you'll have to pass this parameter every time recursively.
Make $exclusions global. This way it can be accessed in every level of recursion.

来源：https://stackoverflow.com/questions/7685134/php-recursive-delete-function

标签

php

recursion

delete-file

dir

unlink