jasny / twig-extensions

            return null;

        }

        if (function_exists('mb_stripos') && function_exists('mb_substr')) {

            $pos = mb_stripos($value, $break);

            return $pos === false ? $value : mb_substr($value, 0, $pos) . $replace;

        }

        $pos = stripos($value, $break);

        return $pos === false ? $value : substr($value, 0, $pos) . $replace;

    }

        if (!isset($value)) {

            return null;

        }

        if (function_exists('mb_strlen') && function_exists('mb_substr')) {

            return mb_strlen($value) <= $length ? $value : mb_substr($value, 0, $length - strlen($replace)) . $replace;

        }

        return strlen($value) <= $length ? $value : substr($value, 0, $length - strlen($replace)) . $replace;

    }