如何使用php反复读取本地端口？

I have searched a lot on this topic and tried a lot of thingd but still i'm stuck.

I have an ec2 instance on which another instance is sending some data through tcp on a specific port. I am using the following code..

  $host = "x.x.x.x";
    $port = 2048;


    $socket = socket_create(AF_INET, SOCK_STREAM, 0)  ;

if (!socket_setopt($socket, SOL_SOCKET, SO_REUSEADDR, 1)) 
{
        echo socket_strerror(socket_last_error($socket));
        exit;
} 
    $result=socket_bind($socket, $host, $port);
    $result = socket_listen($socket, 3);

    $spawn = socket_accept($socket);

    $input = socket_read($spawn, 84);

echo $input;

    socket_close($spawn);
    socket_close($socket);

Sometimes it runs , sometimes it doesn't , it gives error at socket_bind():

"socket_bind(): unable to bind address [98]: Address already in use"

I'v looked a lot on this but nothing has worked...

If someone comes upt with something.. plz help..!

thanx mayur