public function recommendations($num = 10)
{
if ($this->get_cluster()) {
return $this->get_cluster()->recommendations($num);
} else {
return Article::find_all($num);
}
}
public function recommendations($num = 10)
{
if ($num == 0) {
return array();
}
// Append special chars to query string for variable
// length inputs=
$var_list = ":0";
for ($i = 1; $i < $this->size(); $i++) {
$var_list .= ", :" . $i;
}
try {
// Prepare the necessary queries
$clicks = Database::prepare(str_replace("%list", $var_list, self::$SQL_REC));
// Execute the query
for ($i = 0; $i < $this->size(); $i++) {
$clicks->bindValue(":" . $i, $this->data["users"][$i], PDO::PARAM_STR);
}
$today = date("Y-m-d 00:00:00");
$clicks->bindValue(":today", $today, PDO::PARAM_STR);
$clicks->execute();
// Find all the articles associated with the recommended
// urls
$clicks = $clicks->fetchAll(PDO::FETCH_ASSOC);
foreach ($clicks as $info) {
$recommendations[] = Article::find($info["url"]);
}
if (empty($clicks)) {
$recommendations = array();
}
// If there are less than $num recommended urls, fill the
// remainder of the request with the newest articles
$num_normal = $num - count($clicks);
$articles = Article::find_all($num);
for ($i = 0; $i < $num; $i++) {
if (!in_array($articles[$i], $recommendations)) {
$recommendations[] = $articles[$i];
}
}
return $recommendations;
} catch (PDOException $e) {
echo "Error: " . $e;
return false;
}
}
