Cloudinary::build_array PHP Method

    public static function build_array($value)
    {
        if (is_array($value) && !Cloudinary::is_assoc($value)) {
            return $value;
        } else {
            if ($value === NULL) {
                return array();
            } else {
                return array($value);
            }
        }
    }

 public static function build_eager($transformations)
 {
     $eager = array();
     foreach (\Cloudinary::build_array($transformations) as $trans) {
         $transformation = $trans;
         $format = \Cloudinary::option_consume($transformation, "format");
         $single_eager = implode("/", array_filter(array(\Cloudinary::generate_transformation_string($transformation), $format)));
         array_push($eager, $single_eager);
     }
     return implode("|", $eager);
 }