What happens when a MySQL connection is not closed? [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

What happens if MySQL connections continually aren't closed on PHP pages?

If you forget sometimes to close the connection will be close in a while, automatically or will be stay open?

$link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);
$db = mysql_select_db(DB_DATABASE);
.
.
your code
.
.
and you forget to mysql开发者_如何学JAVA_close($link);

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From mysql_connect() function documentation:

Note

The link to the server will be closed as soon as the execution of the script ends, unless it's closed earlier by explicitly calling mysql_close().

PS. You should consider moving to PDO or at least mysqli driver.

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MySQL connections are automatically closed at the end of the script's execution. See PHP docs.