$infoHash = '5b10a2b5b5a2239e68d3ff4f86da31832c26009b';
$connectionID = 0x41727101980;
$transactionID = md5( 'fghfgh' );
$action = 2;

$host = '61.129.77.239';
$port = 8080;

$s = pack( "NNa32a40", $connectionID, $action, $transactionID, $infoHash );

$sock = socket_create( AF_INET, SOCK_DGRAM, 0 );

socket_connect( $sock, $host , $port);

socket_write( $sock, $s , strlen( $s ) );

$result = socket_read( $sock, 100 );