How to log in with mobile phone number + Captcha in z-blog program

The z-blog program that implements mobile phone number + Captcha login can be divided into the following steps:

1. When users register, users are required to enter their mobile phone number and store it in the database.

2. Add a mobile phone number input box and a button to Send Captcha on the page. After the user finishes entering the mobile phone number, click the Send Captcha button to send a short message containing the Captcha to the user's mobile phone.

3. After receiving the mobile phone number and Captcha submitted by the user, the backend first verifies whether the mobile phone number exists in the database. If so, it compares whether the Captcha is correct. If the verification passes, the login is successful; otherwise, the user is prompted that the Captcha code is incorrect or the mobile phone number does not exist.

4. In order to prevent malicious attacks, it is necessary to limit the frequency and number of times you can send text messages for each mobile phone number, and set the validity period. After expiration, the Captcha needs to be re-sent.

5. In order to ensure the security of user information, it is necessary to strengthen password encryption strategies and take necessary measures to protect the security of the database.

To sum up, the z-blog program that realizes mobile phone number + Captcha login requires coordination between the front and back ends, and involves the development and debugging of multiple modules. It is necessary to pay attention to user privacy protection and data security while ensuring the functional integrity of the program.