Convert javascript demo to PHP

I'm offering AUD $100 for this project. The required output is a working PHP demo of the javascript demo shown here: [login to view URL] I need to re-create that demo in 100% PHP, so there is no javascript at all, not even loading external javascript files. The demo takes an input of a text string, splits the string into individual words ("tokens"), then checks each word against a list of known words to see if the word is positive or negative emotion. It also handles "negative" prefix words like "not", "wasn't", "isn't", etc. There is a section that notices those words, then does a little bit of processing to handle them. The javascript demo calls 4 external .js files ([login to view URL], [login to view URL], [login to view URL], [login to view URL]). These need to also be converted to PHP. The file [login to view URL] ([login to view URL]) is a "word stem" function, which turns words like "greatly", "greater", "greatest" into their root word "great". You can probably find a PHP function online that already does word stems, and simply include it. The original Github javascript is here: [login to view URL] The file [login to view URL] is the MOST CRITICAL. [login to view URL] It contains most of the text string manipulation functions. It will be useful to know some background information about what the demo is trying to do: [login to view URL]