gistfile1.php

<?php

function get_stream_metadata($streaming_url, $interval, $offset = 0, $headers = TRUE)
{
  $needle = 'StreamTitle=';
  $ua = 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36';

  $options = [
      'http' => [
      'method' => 'GET',
      'header' => 'Icy-MetaData: 1',
      'user_agent' => $ua
    ]
  ];

  if(($headers = get_headers($streaming_url)))
  {
    foreach($headers as $header)
    {
      if(strpos(strtolower($header), 'icy-metaint') !== FALSE && ($interval = explode(':', $header)[1]))
      {
        break;
      }
    }
  }

  $context = stream_context_create($options);

  if($stream = fopen($streaming_url, 'r', FALSE, $context))
  {
    $buffer = stream_get_contents($stream, $interval, $offset);
    fclose($stream);

    if(strpos($buffer, $needle) !== FALSE)
    {
      $title = explode($needle, $buffer)[1];
      return substr($title, 1, strpos($title, ';') - 2);
    }
    else
    {
      return get_stream_metadata($streaming_url, $interval, $offset + $interval, FALSE);
    }
  }
  else
  {
    throw new Exception('Unable to open stream ['.$streaming_url.']');
  }
}