help with calculations on a flat text file

Posted on 16th Feb 2014 by admin

hello,
I have this code below that is attached to a flat file like this:
Email:LastName:FirstName:Assignment1,100:Assignment2,100:Quiz1,50
someone@email.com:Doe:John:85:93:45

Here is the code:
<?php
$row=1;
$handle= fopen($full_file,'r');
$heading=True;
echo '<table>';
$data=fgetcsv($handle,1024,":");
echo '<tr>';
foreach ($data as $cell)
{
echo '<th>' .$cell. '</th>';
}

echo '<th>Overall Average</th>';
echo '</tr>';

while (($data=fgetcsv($handle,1024,":")) !==FALSE)
{
echo '<tr>';
foreach($data as $cell)
{
$average=$cell/100;
echo '<td width="50">' .$cell. ' ' .$average. '</td>';


}

//echo '<td></td>';


}
if ($row==1)
{
$heading=False;
}
$row++;
echo '</tr>';



echo '</table>';
fclose($handle);
?>

what i need to do with this code, is have an extra column added at the end where is averages out the student's scores, based on the weight of the grade that is located on row 1 and delimited by a ",".

Please help.

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