what are some affordable and good solutions for protecting and licensing my PHP code?

i know about IONcude?,Zend Guard, but what other solutions do you prefer?

I use IONCube. Nothing, however, is perfect. Some other solutions are obfuscators, not encoders... obfuscators are a breeze to hack.

I need same help. Can you help?
I also don't know how to encode with IONCUBE. Please tell me how can I encode a part of a PHP file.