二维码在线生成系统使用说明：

1、解压缩后，把文件放到网站任意目录即可。

2、支持中文、英文二维码生成。

3、随着信息量的增大，二维码图片的尺寸也会变大，出于系统资源的考虑，增加了输入的字节数限制，默认为360字节。

4、修改t.txt文件、png文件夹为777权限，否则会提示生成失败。-The use of online two-dimensional code generation system:

1, after extracting the file into any directory site.

2, support Chinese, English two-dimensional code generation.

3, with the increase of the amount of information, the two-dimensional code image size will also change, for the consideration of system resources, increasing the number of bytes in the input constraints, the default is 360 bytes.

4, modify the t.txt file, PNG folder for 777 permissions, otherwise it will be prompted to generate a failure.