Use global $db outside sugarcrm

[akkimca]

Hi..

i m using sugarcrm 5.5.1 and i have requirement to use global $db outside sugarcrm application.
I have two application(one is Sugarcrm and second is core php application) which using same database of sugar. In my other application i written core php code which first take the data from sugar database and do operation like insert/update/delete and list out the data.


so i need my core php application use sugarcrm global $db(sugar database connection and all database operation) so by this if i upgrade or change the database it also effect my core php application and in future if i change my database or upgrade it wont effect my core php application.
i try this code

  if(!defined('sugarEntry'))define('sugarEntry', true); 
    require_once('../sugarcrm/include/entryPoint.php'); 

   
    global $sugar_config; 
    $db = & PearDatabase::getInstance(); 
  

but didnt get any success

please help me to solve this requirement

[eggsurplus]

For any applications that need to connect to the Sugar db I've always had to do so with an external db lib.