关于php socket 有关问题
关于php socket 问题！
最近做的一个项目，需要用到php socket通信方面，现在我测试了 ，在TCP下可以成功从客户端发往服务端，服务端也可以返回到客户端信息。
但是在UDP下，程序就会出现问题，可以在客户端接收到信息，但是用socket_write()返回的话，会显示找不到返回的地址。。。然后 客户端也接受不到服务端返回的信息！
在此 请求 懂这方面的帮忙解决下。
PHP Warning: socket_write(): unable to write to socket [0]: 由于套接字没有连接
并且(当使用一个 sendto 调用发送数据报套接字时)没有提供地址，发送或接收数据的请求
没有被接受。
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