using zend libraries

hi everyone, i need use some libraries from zend framework in ci, n i dont know how to do it, i have searched in net, but all information is obsolete n not working with actual ci versions, then i tried to load them manually by require_once, n caught error of dependencies, such as

Code:

Class 'Zend\Http\Client' not found in /home/kenan/Documents/Domains/test.loc/application/libraries/Zend/Feed/Reader/Reader.php on line 136

though i have copied all zend libraries to application/libraries directory, so any ideas how to do it?