public function process($url, $width = null, $height = null, $crop = null, $single = true, $upscale = false)
 {
     if (!$url || !$width && !$height) {
         return false;
     }
     $upload_dir = UniteFunctionsWPRev::getUrlUploads();
     $upload_url = uploads_url();
     $http_prefix = "http://";
     $https_prefix = "https://";
     if (!strncmp($url, $https_prefix, strlen($https_prefix))) {
         $upload_url = str_replace($http_prefix, $https_prefix, $upload_url);
     } elseif (!strncmp($url, $http_prefix, strlen($http_prefix))) {
         $upload_url = str_replace($https_prefix, $http_prefix, $upload_url);
     }
     if (false === strpos($url, $upload_url)) {
         return false;
     }
     $rel_path = str_replace($upload_url, '', $url);
     $img_path = $upload_dir . $rel_path;
     if (!file_exists($img_path) or !getimagesize($img_path)) {
         return false;
     }
     $info = pathinfo($img_path);
     $ext = $info['extension'];
     list($orig_w, $orig_h) = getimagesize($img_path);
     $dims = image_resize_dimensions($orig_w, $orig_h, $width, $height, $crop);
     $dst_w = $dims[4];
     $dst_h = $dims[5];
     if (!$dims && (null === $height && $orig_w == $width xor null === $width && $orig_h == $height xor $height == $orig_h && $width == $orig_w)) {
         $img_url = $url;
         $dst_w = $orig_w;
         $dst_h = $orig_h;
     } else {
         $suffix = "{$dst_w}x{$dst_h}";
         $dst_rel_path = str_replace('.' . $ext, '', $rel_path);
         $destfilename = "{$upload_dir}{$dst_rel_path}-{$suffix}.{$ext}";
         if (!$dims || true == $crop && false == $upscale && ($dst_w < $width || $dst_h < $height)) {
             return false;
         } elseif (file_exists($destfilename) && getimagesize($destfilename)) {
             $img_url = "{$upload_url}{$dst_rel_path}-{$suffix}.{$ext}";
         } else {
             $editor = wp_get_image_editor($img_path);
             if (is_wp_error($editor) || is_wp_error($editor->resize($width, $height, $crop))) {
                 return false;
             }
             $resized_file = $editor->save();
             if (!is_wp_error($resized_file)) {
                 $resized_rel_path = str_replace($upload_dir, '', $resized_file['path']);
                 $img_url = $upload_url . $resized_rel_path;
             } else {
                 return false;
             }
         }
     }
     if (true === $upscale) {
         remove_filter('image_resize_dimensions', array($this, 'aq_upscale'));
     }
     if ($single) {
         $image = $img_url;
     } else {
         $image = array(0 => $img_url, 1 => $dst_w, 2 => $dst_h);
     }
     return $image;
 }