public static function getConn()
{
try {
if (!self::$conn) {
self::$conn = new PDO('mysql:dbname=' . self::DB_NAME . ';host=' . self::DB_HOST . ';', self::DB_USER, self::DB_PASS);
}
} catch (PDOException $e) {
echo "An error occured: " . $e->getMessage();
}
return self::$conn;
}