长链接学习链接

php之websocket服务使用（弹幕实现） https://blog.csdn.net/miao0916/article/details/59113489

php+swoole实现群聊 https://blog.csdn.net/qq_34908844/article/details/79180763

php socket 和 html5 websocket 通讯 https://blog.csdn.net/ltx06/article/details/71131605

websocket+php实现前后端实时通信 https://blog.csdn.net/little_rabbit_baby/article/details/53184595

微信小程序+php+swoole极速实现群聊 https://blog.csdn.net/baidu_36030459/article/details/54570921