Bräuchte da mal hilfe - DB-Abfrage

# Berechnung Wagen 1
# PS
$ps_tuning = $wagen1["ps"];

$query2 = mysql_query("SELECT * FROM tuning_gekauft WHERE userid = '$user1'");

while ($array2 = mysql_fetch_array($query2))
{
$ps_tuning2 = mysql_fetch_array(mysql_query("SELECT * FROM tuning WHERE id = '$array2[teileid]' AND wagenid = '$w1id'"));
$ps_tuning = $ps_tuning + $ps_tuning*$ps_tuning2['ps']/100;
}

echo $ps_tuning."<br>".$wagen1["ps"]."<br><br>"; # Ausgabe zum testen

$w1ps = $ps_tuning;

# User 1
$user1 = $_GET["user1"];
$w1id = $_GET["auto1"];
$user1 = mysql_fetch_array(mysql_query("SELECT * FROM benutzerdaten WHERE id = " . intval($user1)));
$wagen1 = mysql_fetch_array(mysql_query("SELECT * FROM wagen WHERE id = " . intval($w1id)));

SELECT * FROM table WHERE id = 1

SELECT * FROM table WHERE name = 'mustermann'

echo("SELECT * FROM tuning_gekauft WHERE userid = '$user1'");

mysql_fetch_array($query, MYSQL_ASSOC)