$chiqarish = mysql_query("SELECT sum(ustun) AS 'ustun' FROM `tablitsa` where `ustun` = 'p1'");

$chiqar = mysql_fetch_assoc($chiqarish);

$chiqarish2 = mysql_query("SELECT sum(ustun) AS 'ustun' FROM `tablitsa` where `ustun` = 'x'");

$chiqar2 = mysql_fetch_assoc($chiqarish2);

$chiqarish3 = mysql_query("SELECT sum(ustun) AS 'ustun' FROM `tablitsa` where `ustun` = 'p2'");

$chiqar3= mysql_fetch_assoc($chiqarish3);