Returns: true on success, false on error.
mysql_close() closes the connection to the MySQL server that's associated with the specified link identifier. If link_identifier isn't specified, the last opened link is used.
Using mysql_close() isn't usually necessary, as non-persistent open links are automatically closed at the end of the script's execution.
Note: mysql_close() will not close persistent links created by mysql_pconnect().
See also: mysql_connect(), and mysql_pconnect().