Request PHP script to detect MySQL character set and port

Request PHP script to detect MySQL character set and port
Ask PHP script to detect MySQL character set and port online, etc.

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PORT: Show variables like ' Port ';

Character set: SHOW VARIABLES like ' character% '

You can use the PHP output.
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Can the port be detected?
Although show variables like ' Port '
Gets the port, but he must be connected to the database before it can be executed
When you do not know the port, you cannot connect to the database
Unless you try it in turn, traverse the entire possible port number until the database service is found

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