Foreach with php and mysql - php

Question

I have the following code which provides the profit results of my rows depending on what Resultat_ID is set to.
$result = mysql_query('SELECT Indsats, Odds, Resultat_ID, Kamp FROM spil');
$row = mysql_fetch_assoc($result);
echo " Gevinster: ";
$Indsats = $row['Indsats'];
$Odds = str_replace(",", ".", $row['Odds']);
$sum = 0;
while($row = mysql_fetch_array( $result ))
{
$Indsats = $row['Indsats'];
$Odds = str_replace(",", ".", $row['Odds']);
if ($row['Resultat_ID'] == 1) //Win
{
$sum += $Indsats * ($Odds-1);
}
elseif ($row['Resultat_ID'] == 2) //Loss
{
$sum += $Indsats * -1;
}
elseif ($row['Resultat_ID'] == 3) //HalfWin
{
$sum += $Indsats * ($Odds-1) * 0.5;
}
elseif ($row['Resultat_ID'] == 4) //HalfLoose
{
$sum += $Indsats * -0.5;
}
}
echo $sum;
I also have a column called Tipper_ID which contains a number for each tipper and a table that contains Tipper_ID and Tipper_Name.
Besides the total profit results above, I want to get the profit results for each tipper, so basically run the above section for "all" and for each Tipper_Name in the Tipper-table and get the profit results for each part.
How do I do that ?
Danish/English Translations:
Gevinster = Gains<br>
Indsats = Effort<br>
Odds = Odds<br>
Resultat = Results<br>
Kamp = Match/Game<br>
Spil = Games<br>
Tipper = Tips

Answer 1

You have 2 options:
Inside your while, perform another query for each result (depending on the number of results, performance can be not that good)
Create a VIEW with the results grouped by Tipper_Name (or whatever you need) and change your query adding an INNER JOIN using the VIEW you just created. Even if this solution is a little bit more complex, it's faster!

Answer 2

This actually looks like a classic SQL problem:
SELECT t.TIPPER_ID, t.TIPPER_NAME,
SUM(CASE(s.Resultat_ID WHEN 1 THEN Indsats*(Odds-1) ELSE 0 END)) AS Win,
SUM(CASE(s.Resultat_ID WHEN 2 THEN Indsats*(-1) ELSE 0 END)) AS Loss,
SUM(CASE(s.Resultat_ID WHEN 3 THEN Indsats*(Odds-1)*(0.5) ELSE 0 END)) AS HalfWin,
SUM(CASE(s.Resultat_ID WHEN 4 THEN Indsats*(-0.5) ELSE 0 END)) AS HalfLoss
FROM spil AS s
LEFT JOIN TIPPERS AS t ON t.TIPPER_ID=s.TIPPER_ID
GROUP BY s.TIPPER_ID
For the total you should simply add those in the php.