MySQL Connection timeout: Error sqlstate[hy000] [2002] Connection timed out

I found a bunch of them on the Internet, and it all went wrong.

Later, I realized that the problem was actually set.

When your code is deployed to the server, your MySQL's host value should be

127.0.0.1

Instead of your server IP

Otherwise you will get an error.

In fact, when your code into the server, MySQL and code is equivalent to the same IP, so use 127.0.0.1, not the server IP

Remember it! No need to change the configuration problem.

MySQL Connection timeout: Error sqlstate[hy000] [2002] Connection timed out