Does PHP need to disconnect the server after using PDO to connect to the MySQL server?

After learning to link a server with a $mysqli object, you need to disconnect the server after you have finished querying
$mysqli->close ();

Want to ask if PDO still needs to be disconnected?
If necessary, how to write?

Reply content:

After learning to link a server with a $mysqli object, you need to disconnect the server after you have finished querying
$mysqli->close ();

Want to ask if PDO still needs to be disconnected?
If necessary, how to write?

PHP comes with a GC (garbage collection mechanism) mechanism to automatically free up memory

$pdo = new \PDO($dsn, $username, $pwd);$pdo = null;

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