How can I know which database is currently being used using code? , current database_PHP tutorial

How to know which database is currently being used using code? , current database

One day, an error suddenly occurred in the production environment. The exception thrown was probably that a certain table did not exist. I thought at the time why it did not exist? Could it be that it was attacked by hackers? So I want to know which database is currently used

<span>$current_database</span> = <span>mysql_query</span>("SELECT DATABASE()") or <span>die</span>(<span>mysql_error</span>());<br /><span>echo</span> <span>mysql_result</span>(<span>$current_database</span>,0);

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