php socket服务端能不能在网页端开启？而不是只能用CLI模式开启
最近在做基于php socket的聊天程序，但是遇到了个问题：
开启ws端口只能在CMD下用php server.php的方式来开启端口，并不能关闭该CMD命令行窗口，一旦关闭就断开了socket连接。
请问，能不能做到不用这样的方式来开启ws服务端，而成为在网页端来开启？怎么做？
------解决方案--------------------
可以从网站上开启，但需要注意以下问题：
1、因为端口不能重复打开，所以你必须保证 server.php 只会被运行一次
2、web 方式下的 php 是超时设置有效的，当然你需要设置成永不超时
3、web 服务器是有超时限制的，虽然时间比较长。应用程序长时间无数据输出，将会被挂起或中断
4、如果 server.php 间歇的做标准输出的话，可以解决 3 的问题。但会引发下一个问题
5、php 在向标准输出写的时候，会检查到请求源的连接是否畅通。如果请求源被关闭了，就会终止程序的运行
当然也提供有阻止这一默认行为的方法
其实命令窗口的存在并不是什么坏事，至少他可以表示 ws 服务器正在工作
另外 ws 服务器在运行时，你应该要把重要的日志信息打印在窗口中，以便实时监视运行情况
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