Импорт XML ошибка в коде

Warning: mkdir(): Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 316
Warning: fopen(C:\xampp\htdocs\2016/image/data/import_yml/№/131/F01/9|c/-72/|s-/67/21a6d673-3eef-11e6-b949-00155d516702-13.jpeg): failed to open stream: Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 485
Warning: fopen(C:\xampp\htdocs\2016/image/data/import_yml/№/131/F01/9|c/-72/|s-/67/21a6d673-3eef-11e6-b949-00155d516702-12.jpeg): failed to open stream: Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 485
Warning: mkdir(): Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 316
Warning: fopen(C:\xampp\htdocs\2016/image/data/import_yml/№/131/F01/9|c/-72/|s-/63/21a6d673-3eef-11e6-b949-00155d516702-13.jpeg): failed to open stream: Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 485
Warning: fopen(C:\xampp\htdocs\2016/image/data/import_yml/№/131/F01/9|c/-72/|s-/63/21a6d673-3eef-11e6-b949-00155d516702-12.jpeg): failed to open stream: Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 485
Warning: mkdir(): Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 316
Warning: fopen(C:\xampp\htdocs\2016/image/data/import_yml/310/4|c/-14/6|s/-71/13c8f304-9842-11e2-b6ba-8c89a5d9e6b9-2.jpeg): failed to open stream: Invalid argument in C:\xampp\htdocs\2016\admin\controller\tool\import_yml.php on line 485

 private function loadImageFromHost($link, $img_path)
    {
        if (!file_exists($img_path)) {
            $ch = curl_init($link);
            $fp = fopen($img_path, "w");
            if ($fp) {
                $options = array(CURLOPT_FILE => $fp,
                                 CURLOPT_HEADER => 0,
                                 CURLOPT_FOLLOWLOCATION => 1,
                                 CURLOPT_TIMEOUT => 60,
                            );
 
                curl_setopt_array($ch, $options);
 
                curl_exec($ch);
                curl_close($ch);
                fclose($fp);
            }
 
            return file_exists($img_path);
        }
        
        return true;

//foreach ($offers->offer as $offer) {
        for ($i = $start; $i < $n; $i++) {
            $offer = $offers->offer[ $i ];
 
            $product_images = array();
            
            $dir_name = 'data/import_yml/' . implode('/', str_split((string)$offer['id'], 3)) . '/';
            if (!is_dir(DIR_IMAGE . $dir_name)) {
                mkdir(DIR_IMAGE . $dir_name, 0777, true);
            }
            
            foreach ($offer->picture as $picture) {             
                $img_name = substr(strrchr($picture, '/'), 1);
    
                if (!empty($img_name)) {
                    $image = $this->loadImageFromHost($picture, DIR_IMAGE . $dir_name . $img_name);
                    if ($image) {
                        $product_images[] = array('image' => $dir_name . $img_name, 'sort_order' => count($product_images));
                    }
                }
            }
 
            $image_path = array_shift($product_images);
            if (is_array($image_path)) {
                $image_path = $image_path['image'];
            }

echo DIR_IMAGE . $dir_name;
die();

$dir_name = 'data/import_yml/' . implode('/', str_split((string)$offer['id'], 3)) . '/';
            if (!is_dir(DIR_IMAGE . $dir_name)) {
                mkdir(DIR_IMAGE . $dir_name, 0777, true);
            }
            
            foreach ($offer->picture as $picture) {             
                $img_name = substr(strrchr($picture, '/'), 1);