php socket客户端和服务端互相通讯实例

    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 socketn");
    //绑定socket到端口
    $result=socket_bind($socket,$host,$port) or die("cannot bind port to socketn");
    //开始监听这个端口
    $result=socket_listen($socket,4) or die("could not set up socket listenn");
    //接受连接，另一个socket来处理通信
    $msgsock=socket_accept($socket) or die("cannot accept incoming connectionn");
    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 inputn");
    $input=trim($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);
 
?>

    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 socketn");
     
    $conn=socket_connect($socket,$host,$port) or die("cannot connect servern");
     
    if($conn){echo "client connect ok!";}
     
    socket_write($socket,"hello world!") or die("cannot write datan");
     
    $buffer=socket_read($socket,1024,PHP_NORMAL_READ);
     
    if($buffer){
        echo "response was:".$buffer."n";
    }          
    socket_close($socket);
?>