一个用php编写的网络课堂系统，网络课堂系统打破了传统的学习模式，学员可以不受时间和地点的限制，只要在有网络的地方，都可以随时随地的学习老师制作的视频课程！-A PHP prepared by the network classroom system, network classroom system broke the traditional learning mode, students can not limited by time and place, as long as in the