add new languages

Hi, what is the easiest way to add new languages? Can I change the lines of those two files(positive and negative sentences) to another language?

Hi Behnamy, actually there's going to be a second part to this article that explains how to do just that, but in much more shorter text, it's very easy to add new languages all you have to do is supply a training set to the algorithm using the language that you want it to learn.
For instance if you want to train the algorithm with Spanish, supply a data file that contains spanish texts and save the positive one(s) with .pos and likewise the negative one(s) with .neg

I would recommend you fork the project on GitHub: https://github.com/Samshal/PHP-Sentiment-Analyzer
Then add the languages to a separate branch and create a new pull request, this will ensure other user's benefit from your generosity.

Thanks