include 'db.php'; include 'queries.php'; include 'classes.php'; if (isset($_POST['keyword'])) { $keyword = $_POST['keyword']; $keys = explode(' ', $keyword); /*create dictionary starts*/ $t_create_start = microtime(true); $qobj = new Queries(); $btree = new BTree(); $btreeop = new BOperation(); $content = array(); $contentlist = array(); $docidlist = array(); $doclist = $qobj->retrieve_documents($conn); while ($row = $doclist->fetch()) { echo $row['doc_id'] . " => "; echo $row['content']; $content = explode(' ', $row['content']); array_push($docidlist, $row['doc_id']); array_push($contentlist, $content); echo "<br>"; } $collection = array_combine($docidlist, $contentlist); $dictionary = array(); $l = array(); // create dictionary list foreach ($collection as $doc => $content) { foreach ($content as $i => $word) { $word = strtolower($word);