Modify the MySQL database port number.

Modify the MySQL database port number.

Modify the configuration file when the database service starts.

First, shut down the Database Service and modify the configuration file: When you modify the configuration file, there are several areas that will involve the port number. You only need to modify the following:

When starting the Database Service, you must connect to the database through 13306. Otherwise, the database cannot be connected.

How can I change the port number of MySql?

You can find this on the Internet.
Find the my. ini file.
Put
Port = 3306 changed

After the Mysql database port number is changed to 3305, codeigniter cannot connect to the database

The port in the configuration file has not been changed