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nishmgopal
Forum Contributor
Posts: 101 Joined: Tue Mar 03, 2009 9:38 am
Post
by nishmgopal » Tue Mar 17, 2009 8:39 am
Hi guys, this is my code:
Code: Select all
$query1="SELECT `Skill_Name`, `Weight`
FROM ID_Table
JOIN Job_ID ON ID_Table.Job_ID = Job_ID.Job_ID
WHERE Job_ID.Job_Name ='$_SESSION[Job_Name]'";
$result1 = mysql_query($query1) or die ("Couldn't execute query.");
while ($row1=mysql_fetch_array($result1))
{
$tblRows1 .= "<tr>";
$tblRows1 .= "<td>{$row1['Skill_Name']}</td>";
$tblRows1 .= "<td>{$row1['Weight']}</td>";
$tblRows1 .= "</tr>\n";
}
$query="SELECT `Skill_Name`, `Score`
FROM Person_Skill
JOIN Person_ID ON Person_Skill.Person_ID = Person_ID.Person_ID
WHERE Person_ID.Person_Name ='$_SESSION[Person_Name]'";
$result = mysql_query($query) or die ("Couldn't execute query.");
while ($row=mysql_fetch_array($result))
{
$tblRows .= "<tr>";
$tblRows .= "<td>{$row['Skill_Name']}</td>";
$tblRows .= "<td>{$row['Score']}</td>";
$tblRows .= "</tr>\n";
}
$diff=($tblRows - $tblRows1);
echo "$diff";
?>
but the above code just returns a 0....do i need to use a loop of some sort to get all the differences?
thanks
pickle
Briney Mod
Posts: 6445 Joined: Mon Jan 19, 2004 6:11 pm
Location: 53.01N x 112.48W
Contact:
Post
by pickle » Tue Mar 17, 2009 9:46 am
You're subtracting some html code from some other html code. String math doesn't work so well.
Real programmers don't comment their code. If it was hard to write, it should be hard to understand.
nishmgopal
Forum Contributor
Posts: 101 Joined: Tue Mar 03, 2009 9:38 am
Post
by nishmgopal » Tue Mar 17, 2009 10:17 am
any suggestions?
a.heresey
Forum Commoner
Posts: 59 Joined: Wed Dec 13, 2006 7:31 pm
Location: Chesapeake, VA, US
Post
by a.heresey » Tue Mar 17, 2009 10:33 am
Are you trying to subtract the weight from the score?
Why not use:
Code: Select all
$diff = $row['Score']-$row['Weight'];
nishmgopal
Forum Contributor
Posts: 101 Joined: Tue Mar 03, 2009 9:38 am
Post
by nishmgopal » Tue Mar 17, 2009 10:40 am
Yeh i already tried that and i get a return of 0