public function getUserById($user_id) { //lau thong tin nguoi dung tu id if (empty(self::$conn)) { self::$conn = $this->connectPdo(); } $sql = "SELECT * FROM user WHERE id=?"; $stmt = self::$conn->prepare($sql); $stmt->bindParam(1, $user_id); $stmt->execute(); $stmt->setFetchMode(PDO::FETCH_ASSOC); $users = array(array()); $i = 0; while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) { $users[$i++] = $row; } $i--; return $users; }