My current PHP5.3 installation was compiled with libmysql by default. To run certain mysqli functions, I need the mysqlnd library, but I can't seem to find a step by step guide giving proper description how to recompile PHP 5.3 on Debian 6 with custom settings. All I found was the configuration parameter on the PHP.net manual (http://php.net/manual/en/mysqlinfo.library.choosing.php) saying that this is a compile time decision: $ ./configure --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-mysql=mysqlnd Any ideas how to do it? Thanks!