php ile bir hesap yapma yardımı

 id      urun_id       urun_adet
  3         2              5
  3         4             14
  3         7             23

 id         urun_adi        urun_fiyati
  1           aaaaaa            10.00
  2           bbbbbb            12.00
  3           cccccc            08.00
  4           dddddd            05.00
  5           eeeeee            15.00
  6           ffffff            20.00
  7           gggggg            25.00
  8           hhhhhh            30.00
  9           iiiiii            40.00
  10          jjjjjj            50.00

$sql = mysql_query("select * from tablo_1, tablo_2 where tablo_1.urun_id = tablo_2.id");
while($q = mysql_fetch_assoc($sql)){
echo $q[urun_adi].' --- '.$q[urun_adet].' --- '.$q[urun_fiyati].' --- '.$q[urun_adet];
}

$sql = mysql_query("select * from tablo_1 INNER JOIN tablo_2 ON tablo_1.urun_id = tablo_2.id");
while($q = mysql_fetch_assoc($sql)){
echo $q[urun_adi].' --- '.$q[urun_adet].' --- '.$q[urun_fiyati].' --- '.$q[urun_adet];
}