"I do not warrant this script for work with your code", writes the author. Just as well he does, as even the example script distributed with the code doesn't work, printing "Hello whrld!!&" instead of "Hello world !!!". (This is leaving aside for the moment the pointlessness of writing an "obfuscator" in the first place.)
Add to that all the comments in Chinese in the code (at least, that's what my browser renders them as) and you have a real hum-dinger of a distribution.