$kaynak = file_get_contents('http://www.site.com/site.aspx?unk='.$i);
$kaynak = str_replace("\n","",$kaynak);
$veriler = preg_match_all("'<td class=\"baslik\">(.*?)</td>'",$kaynak,$baslik);
echo $veriler['0'];
yada
$kaynak = file_get_contents('http://www.site.com/site.aspx?unk='.$i)...