Need simple php encoder.

Hello, I have few php pages and I want to encode the codes. I have searched but only find expensive software, I need basic encoder that is free. Will pay you small fee if you can recommend me a free encoder that works. I have also tried ioncube online version but after I put the encrypted code on my site and try viewing the source code, I could see the codes unencrypted so not sure what I'm doing wrong. Have low budget. Thanks