stream_get_line在到达时不读取行

Question

I'm trying to read a streaming data using PHP.

So I would like to read and show every message posted from a server in real time.

I assume that $uri, $context from the code snipped are correctly defined.

When I use this code, the only result I got is when then lenght is reached. It seams that it doesnt stop on delimiter "" string.

DEFINE('TOKEN', "MY_TOKEN");

$opts = array(
  'http' => array(
    'method' => "GET",
    'header'=> "Authorization: Basic " . base64_encode(TOKEN)));
$context = stream_context_create($opts);
if (($fp = fopen($uri, "r", false, $context))) {
  while (!feof($fp)) {
    $contents = stream_get_line($fp, 1024, "");
    echo "text: " . $contents . "
";
  }
fclose($fp);

When the lenght is reached, it show correctly all the new messages posted. with the string "text: " before every message.

How could I do to print one message by one ?

PS: I tried to use "", " ", " " or " ", nothing works :/.

I need some help there, thanks a lot.

Edit: adding the context