Socket realizes the php code of client and server communication function

This article mainly introduces PHP to realize the communication function between client and server based on socket. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

Server:

<?php
 set_time_limit(0);
 $host="localhost";
 $port=1001;
 //创建一个连接
 $socket=socket_create(AF_INET,SOCK_STREAM,SOL_TCP)or die("cannot create socket\n");
 //绑定socket到端口
 $result=socket_bind($socket,$host,$port) or die("cannot bind port to socket\n");
 //开始监听这个端口
 $result=socket_listen($socket,4) or die("could not set up socket listen\n");
 //接受连接，另一个socket来处理通信
 $msgsock=socket_accept($socket) or die("cannot accept incoming connection\n");
 if($msgsock){
  echo date("Y-m-d H:i:s D a");
 }
 //读取客户端发送过来的信息
 $input=socket_read($msgsock,1024) or die("cannot read input\n");
 $input=trim($input);
 $output=strrev($input)."顺序反过来了吧\n";
 //对接收到的信息进行处理，然后返回到客户端
 socket_write($msgsock,$output,strlen($output)) or die("cannot write");
 //关闭socket连接
 socket_close($msgsock);
 socket_close($socket);
?>

Client:

##

<?php
 set_time_limit(0);
 $host="localhost";
 $port=1001;
 //创建一个socket
 $socket=socket_create(AF_INET,SOCK_STREAM,SOL_TCP)or die("cannot create socket\n");
 $conn=socket_connect($socket,$host,$port) or die("cannot connect server\n");
 if($conn){echo "client connect ok!";}
 socket_write($socket,"hello world!") or die("cannot write data\n");
 $buffer=socket_read($socket,1024,PHP_NORMAL_READ);
 if($buffer){
  echo "response was:".$buffer."\n";
 }
 socket_close($socket);
?>

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