How to use the easy language recharge (charging system) source code?

Have you ever set up an FTP server yourself? If not, set one, and then fill in your FTP IP address at that IP address, followed by "3 1" "Myna 520" and so on. To sum up, the connection error has the following reasons:

1. No FTP server has been set (that is, no FTP server was created with the filled IP). Solution: there is FTP space setting software on the internet, which is very simple.

2. The user name and password are incorrect. Solution: Just fill in the correct user name and password.

3. The IP is not filled correctly (that is, your FTP server has been created, but the IP is not filled correctly). Solution: Just fill in the IP correctly.

PS: I don't recommend that you use FTP space, because everyone's IP is dynamic. If you connect after logging off, you will be assigned another IP, and others can't connect, so I suggest that the landlord rent the server himself. If you don't have money, you can set the parameter "ip address" as a variable, and then use peanut shell software to automatically read your current IP, and then send the data to the client, so that the client can analyze your current IP on the peanut shell. This is more troublesome. It is suggested that the landlord rent the server.