public static function getInstance()
{
if (!isset(self::$_instance)) {
self::$_instance = new SimplePDO();
}
return self::$_instance;
}
/**
获取一个单例对象
*/
static function &instance()
{
if (!self::$pdo instanceof PDO) {
self::$pdo = new SimplePDO();
}
return self::$pdo;
}
public function this_browser_percent()
{
$database = SimplePDO::getInstance();
// count all requests
$database->query("SELECT * FROM `requests`");
$database->execute();
$total = $database->rowCount();
// count all requests with current ua string
$database->query("SELECT * FROM `requests` WHERE `browser_ua` = :browser_ua");
$database->bind(':browser_ua', $this->browser_ua);
$database->execute();
$this_browser = $database->rowCount();
// return this browser usage in percent
return $this_browser / $total * 100;
}
function getAll()
{
return SimplePDO::instance()->doQuery("select * from `{this->table}`");
}
/**
*/
function saveOne($id, $update)
{
$update['update_time'] = date('Y-m-d H:i:s');
return SimplePDO::instance()->doUpdate($this->table, $update, "id=?", [$id]);
}
