QR code online generation system

Instructions for using the QR code online generation system:

1. After decompressing, place the file in any directory on the website.

2. Supports Chinese and English QR code generation.

3. As the amount of information increases, the size of the QR code image will also increase. For the sake of system resources, the input byte limit is increased, and the default is 360 bytes.

4. Modify the t.txt file and png folder to have 777 permissions, otherwise it will prompt that the generation failed.