Alternative_Heap::create_alt_plugins_dir PHP Метод

    public function create_alt_plugins_dir($alt_heap = "")
    {
        $orig_plugins_dir = WP_PLUGIN_DIR;
        $alt_plugins_dir = WP_PLUGIN_DIR . self::get_alt_suffix($alt_heap);
        // panic and exit early if directories are the same
        if ($orig_plugins_dir == $alt_plugins_dir) {
            return false;
        }
        // create the new plugins directory if it doesn't exist. Otherwise, empty it.
        if (!file_exists($alt_plugins_dir)) {
            mkdir($alt_plugins_dir);
        } else {
            // OMG... RecursiveIteratorIterator. Standard PHP Lib, I love (hate) you <3
            // We use the CHILD_FIRST flag here in order to delete directories inside the plugins dir first
            $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($alt_plugins_dir), RecursiveIteratorIterator::CHILD_FIRST);
            foreach ($iterator as $node) {
                if (in_array($node->getBasename(), array('.', '..'))) {
                    continue;
                } elseif ($node->isFile() || $node->isLink()) {
                    unlink($node->getPathname());
                } else {
                    rmdir($node->getPathname());
                }
            }
        }
        // we should now have an empty dir at $alt_plugins_dir
        // let's symlink all plugins from the orig dir
        $iterator = new DirectoryIterator($orig_plugins_dir);
        foreach ($iterator as $node) {
            $basename = $node->getBasename();
            if ('.' === $basename[0]) {
                continue;
            }
            // create symlink
            $link_target = $alt_plugins_dir . DIRECTORY_SEPARATOR . $basename;
            symlink($node->getRealPath(), $link_target);
        }
        return $alt_plugins_dir;
    }