Update script cakephp

Hi, I have SAAS script can create subdomain and cpanel account on my WHM server and install a script with database pre configured, but I need to change this script with opencart so when some one do order on my SAAS opencart installed pre configured on cpanel, I already have all the codes but I need only changing some lines for example configuration of database and some pre configured settings on database I need the client have opencart ready to work. Thanks