1. In the login page to add a captcha function, how to do?
2. Employees' attendance system in a module, how to realize (pictured)?

CodePudding user response:

Generate a random number, and then draw a picture to show

CodePudding user response:

Attendance attendance machine refers to? This advanced machine is the data stored in the database, you can directly read the data, the request will tell you when you buy a table structure, if again a little bit advanced may also have a development kit, it will use a variety of examples of language