set_time_limit(0);
 
$host = "127.0.0.1";
$port = 2046;
 
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)or die("Could not create	socket\n"); // 创建一个Socket
 
$connection = socket_connect($socket, $host, $port) or die("Could not connet server\n");    //  连接
 
socket_write($socket, "time") or die("Write failed\n"); // 数据传送 向服务器发送消息
 
while ($buffer = socket_read($socket, 1024, PHP_NORMAL_READ)) {
    echo("Data sent was: time\nResponse was:" . $buffer . "\n");
}
 
socket_close($socket);

 
set_time_limit(0);
 
$host = "127.0.0.1";
$port = 2046;
 
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("Could not create	socket\n"); // 创建一个Socket
 
$result = socket_bind($socket, $host, $port) or die("Could not bind tosocket\n"); //绑定Socket到端口
 
$result = socket_listen($socket, 3) or die("Could not set up socket listener\n"); // 开始监听连接
 
$spawn = socket_accept($socket) or die("Could not accept incoming connection\n"); // 处理通信
 
$input = socket_read($spawn, 1024) or die("Could not read input\n"); // 数据传送 获得客户端的输入
 
$input = trim($input);
echo 'input:', $input, "\n";
 
if ($input == 'time') {
    $output = date("Y-m-d H:i:s"). "\n"; //处理客户端输入并返回结果
}else{
    $output = "input error \n"; //处理客户端输入并返回结果
}
 
echo "output:", $output, "\n";
 
//	数据传送 向客户端写入返回结果
socket_write($spawn, $output, strlen($output)) or die("Could not write output\n");	
 
// 关闭sockets
socket_close($spawn);
socket_close($socket);

/* {{{ proto resource socket_create(int domain, int type, int protocol) U
   Creates an endpoint for communication in the domain specified by domain, of type specified by type */
PHP_FUNCTION(socket_create)
{
        long            arg1, arg2, arg3;
        php_socket      *php_sock = (php_socket*)emalloc(sizeof(php_socket));
 
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &arg1, &arg2, &arg3) == FAILURE) {
                efree(php_sock);
                return;
        }
 
        if (arg1 != AF_UNIX
#if HAVE_IPV6
                && arg1 != AF_INET6
#endif
                && arg1 != AF_INET) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid socket domain [%ld] specified for argument 1, assuming AF_INET", arg1);
                arg1 = AF_INET;
        }
 
        if (arg2 > 10) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid socket type [%ld] specified for argument 2, assuming SOCK_STREAM", arg2);
                arg2 = SOCK_STREAM;
        }
 
        php_sock->bsd_socket = socket(arg1, arg2, arg3);
        php_sock->type = arg1;
 
        if (IS_INVALID_SOCKET(php_sock)) {
                SOCKETS_G(last_error) = errno;
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to create socket [%d]: %s", errno, php_strerror(errno TSRMLS_CC));
                efree(php_sock);
                RETURN_FALSE;
        }
 
        php_sock->error = 0;
        php_sock->blocking = 1;
                                                                                                                                           1257,1-8      61%
        ZEND_REGISTER_RESOURCE(return_value, php_sock, le_socket);
}
/* }}} */