Text Analyzer - Keyword Density Script

I need a script exactly like which is on the website, [login to view URL] Basically this script checks for keyword density on articles pasted in the multi line text field and provides a report. I need the following features from the above website. I attached a file ([login to view URL]) for your view of what exact features I want to have put in. Enter your text to analyze here: (this is the part where people paste their article or whatever - this should handle extremely large content in case someone wishes to analyze something with like 5000 words or something) ---Analysis options--- Minimum characters per word : (this is the minimum characters that will be used to identify a legitimate word) Special word or expression to analyze : (this is the special word the software looks for specifically rather then generating a general report) Number of words to be analyzed : (this is self explanatory) Ignore numbers : (yes or no check mark) ON THE REPORT, it should show everything that is attached (file [login to view URL]) I do not want this PHP file to load the form. In other words, I want put the form code, text fields on any webpage and just like the <form action="/analyse/[login to view URL]"> this way when someone hits submit, they're brought to that page. I also want this PHP file to have easy way for me to update the header / footer / background color or background images. I guess it should connect with a CSS for background colors, fonts, sizes and more. However I still need an easy way for me to just update the header / footer. Perhaps link the header and footer to their own separate files like [login to view URL] and [login to view URL] or something? The PHP file which you provide me should NOT BE ENCRYPTED. However for my security, I prefer two versions, one not encrypted and one encrypted by ION CUBE. Payment will through Escrow.