Lucene/Xapian search - urgent

In connection with a PHP-based website, I need relatively urgently a Lucene/Xapian-based or comparable indexing and full-text search application for legal documents. Key criteria are support for proximity searches ("home w/5 owner" retrieves all documents containing the word "home" within 5 words of the word "owner"), scalability and speed. I need a functioning prototype (basic functionality only) that integrates with the existing design of the rest of the website by February 23. Integration between indexer and PHP should also be provided as well - use of ports (like PyLucene) is permitted. Given the timeframe, this project is probably only suited for developers who have done a Lucene/Xapian indexer before. Thanks. M.