using existing mysql connection in a php extension

hello, is it possible to use an existing mysql connection created from php-code $conn=mysql_connect('localhost','root','secret'); in an php-extensions, e.g. by giving the ressource id to the extension as an argument: my_extemsion_function('do_something',$conn); ? because if i have to connect to the mysql server again from my extension, i'll lose the performance-improvement gained from the faster C++-code. -- Adrian mailto:adrian@planetcoding.net www: http://www.planetcoding.net www: http://www.webskyline.de