php Socket通信

<?php
error_reporting(0);
$host = "0.0.0.0";
$port = 1082;
$maxUser = 10;

set_time_limit(0);


$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket create failed: " . socket_strerror( socket_last_error() ) . "
");

socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, true) or die("option set failed: " . socket_strerror( socket_last_error() ) . "
");
socket_bind($socket, $host, $port) or die("socket_bind() failed: " . socket_strerror( socket_last_error() ) . "
");
socket_listen( $socket, 3 ) or die("socket_listen() failed: " . socket_strerror( socket_last_error() ) . "
");

echo "Starting Listen!
";
do{
    if( $msgSocket = socket_accept($socket) === false ){
        echo "socket_accept() failed： " . socket_strerror( socket_last_error() ) . "
";
        break;
    }else{
        $msg = "hello world";
        socket_write($msgSocket, $msg, strlen( $msg ));
        
        echo "read client message
";
        $buf = socket_read($msgSocket, 8192);
        $talkback = "received message: $buf
";
        
        echo $talkback;
        
        if( false === socket_write($msgSocket, $talkback, strlen($talkback)) ){
            echo "socket_write() failed reason:" . socket_strerror(socket_last_error($sock)) ."
";
        }else{
            echo "send success
";
        }
        
        //socket_send($msgSocket, $buf, $len, $flags);
    }
    socket_close( $msgSocket );
    
}while ( true );

socket_close($socket);
?>