$yer = "http://www.facebook.com/group.php?gid=145520163030";

function sayfa_cek($url)
{
    $browser = $_SERVER['HTTP_USER_AGENT'];
    $oturum = curl_init();
    curl_setopt($oturum, CURLOPT_URL, $url);
    curl_setopt($oturum, CURLOPT_USERAGENT, $browser);
    curl_setopt($oturum, CURLOPT_HEADER, 0);
    curl_setopt($oturum, CURLOPT_RETURNTRANSFER, true);
    $sayfa_data = curl_exec($oturum);
    curl_close($oturum);
    return $sayfa_data;
}

preg_match_all('#<h3>(.*?)</h3>#si', sayfa_cek($yer), $aldim4);

$isim = $aldim4[1][0]; 

echo $isim;