(PHP 4, PHP 5)
msql_close — Close mSQL connection
msql_close() closes the non-persistent connection to the mSQL server that's associated with the specified link identifier.
Using msql_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.
mSQL 连接。如果不指定，则使用由 msql_connect() 最近打开的连接。如果没有找到该连接，函数会尝试通过调用 msql_connect() 建立连接并使用它。
成功时返回 TRUE， 或者在失败时返回 FALSE.