Question

I have a graph that auto fills based on a few values. The values are the goal (total) the current (where it is at now) and in the total height of the graph. I am trying to pull the goal and current out of the database format it into money and it should fill the graph to the point it needs to be.

I had it working with a URL get which was ?current=584559096&goal=1000000000 and I just used $_GET. For easier maintenance for others around I want to pull it from a database which can be updated a post.

The code I have so far is:

    <? php function formatMoney($number, $fractional=false) {
        if ($fractional) {
            $number = sprintf('%.0f', $number);
        }
        while (true) {
            $replaced = preg_replace('/(-?\d+)(\d\d\d)/', '$1,$2', $number);
            if ($replaced != $number) {
                $number = $replaced;
            } else {
                break;
            }
        }
        return $number;
    }

        $goal = $row['goal'];
        $current = $row['current'];
        $percent = round($current / $goal * 100);
        $totalheight = 216;
        $ourheight = $totalheight * $percent / 100;

        $halfofarrowheight = 12;
            $arrowheight = $totalheight-$ourheight-$halfofarrowheight; 
            if($arrowheight < 0)
                $arrowheight = 0;
    mysql_close($con);
?>

Here is my query

mysql_select_db("databasename", $con);

$result = mysql_query("select * from `dbname`.`tablename");

This is my error Warning: Division by zero in E:\inetpub\wwwroot\test.website.net\web\includes\globalfoot.php on line 36

Line 36 is the $percent = round($current / $goal * 100);

So, I been fooling with this thing for 4 days now trying to just get the numbers out of the goal column and current column format them to money and have the chart fill. For test sake lets say the goal is 1000000000000 and the current is 5000000000.

Answer 1

Your code should look like this:

mysql_select_db("databasename", $con);
$result = mysql_query("select * from `dbname`.`tablename");
if (!$result || !($row = mysql_fetch_assoc($result))) {
    echo "DB error: ".mysql_error();
    exit;
}

$goal = $row['goal'];
$current = $row['current'];
// ...