// Ищем последнюю игру
  $lastGameStart = $lastGameEnd = 0;
  $marker = -1;
  while( ($marker = strpos($gameLog, 'DOTA_GAMERULES_STATE_POST_GAME', $lastGameEnd + 1)) !== false)
  {
      if($lastGameEnd)
        $lastGameStart = $lastGameEnd;
      $lastGameEnd = $marker;
  }