using mysql_close()

Question

is it necessary to use mysql_close() at the end of a query in PHP?

Answer 1

No. When the PHP requests ends all resources will be freed, including MySQL connection resources.

Answer 2

Using mysql_close() isn't usually necessary, as non-persistent open links are automatically closed at the end of the script's execution. See also freeing resources.

read more at :

http://php.net/manual/en/function.mysql-close.php

Answer 3

In the manual :

mysql_close() closes the non-persistent connection to the MySQL server that's associated with the specified link identifier.

Using mysql_close() isn't usually necessary, as non-persistent open links are automatically closed at the end of the script's execution.

More reading about that here

Answer 4

As answered by others and the manual, it's not necessary. But if you wonder the use; you usually only want to do this when there is more to come in the PHP script and you want to ensure that another connection/transaction is to be used then.