bohwaz

<?php

/*
Adapted from C function available at http://www.sqlite.org/fts3.html#appendix_a

Use like this:
$db = new SQLite3('database.db');
$db->createFunction('rank', 'sql_rank');
$db->query('CREATE VIRTUAL TABLE products USING fts4 (id INTEGER, title TEXT, description TEXT);');
$db->query('SELECT * FROM products WHERE products MATCH \'Computer\' ORDER BY rank(matchinfo(products), 0, 1.0, 0.5) DESC;');