/**
     * @param $fontsize   字体大小
     * @param $ttfpath   字体文件
     * @param $str      字符串
     * @param $width    最大宽度
     * @param int $fontangle  将被度量的角度大小
     * @param string $charset   编码
     * @return string
     */
    public static function autoWrap2($fontsize, $ttfpath, $str, $width, $fontangle = 0, $charset = 'utf-8')
    {
        $len = mb_strlen($str);
        $arr = array();
        $tmpArr = array();
        $tmpStr = '';
        for ($i = 1; $i <= $len; $i++) {
            $tmpStr = mb_substr($str, 0, $i);
            $size = imagettfbbox($fontsize, $fontangle, public_path() . '/static/fonts/msyh.ttf', $tmpStr);
            $w = $size[2];
            if ($w < $width) {
                if ($i < $len) {
                    continue;
                } else {
                    return $tmpStr;
                }
            } else {
                $arr[] = $tmpStr;
                $str2 = mb_substr($str, $i);
                $tmpStr .= PHP_EOL . self::autoWrap2($fontsize, $ttfpath, $str2, $width);
            }
            break;
        }
        return trim($tmpStr, PHP_EOL);
    }