Ioncube loader

I know taht this question has been made in the past (I’ve seen some threads) but I’ve some difficult with english…
I think to understand that I can install ioncube loader ( with custom php.ini ( . I’ve yet used custom php.ini for othger variables as register_globals and it works. It doesn’t work for this variable:

zend_extension="/home/myuser/ioncube/" neither

zend_extension="/home/.lexy/myuser/ioncube/" in error log:

Failed loading /home/myuser/ioncube/ /home/myuser/ioncube/ cannot open shared object file: No such file or directory the path seems correct…

Any suggestions?