Help with a "for loop"

[SMDStudios]

Please bear with me I am a PHP hacker and not a coder....yet.

Anyhow, I am trying to simplify some current code that I have to make it easier to update. I have a set of variables that I define in my code that increment from 1..2..3..4 in order depending on the section and want to make it into a for loop that I can just set the start number and ending number for each section.

Currently...

$question1 = $REProw['quest_1'];
$question2 = $REProw['quest_2'];
$question3 = $REProw['quest_3'];
$question4 = $REProw['quest_4'];
...
$total=abs($question1) + abs($question2)...

and I would like to have something like this..

$totalI = 0;
for ($i=1;$i <= 21; $i++){
$totalI = $totalI + ${"question".$i};
}

As you can see I haven't gotten far so any help in finishing this would be appreciated.

[byron3@earthlink]

function TotalI( $end, $start = 1)
$totalI = 0; // Reset to zero
for ($i = $start;$i <= $end; $i++){
    $totalI += $REProw["quest_" . $i]; //Add the value
}

retrun $totalI;
} 

[hexburner]

Please bear with me I am a PHP hacker and not a coder....yet.

Uchm...

$total = 0;
for ($i = 1, $length = count($REProw)+1; $i < $length; $i++) {
    $total += $REProw['quest_'.$i];
}

// Or even faster

$total = array_sum($REProw); 

[SMDStudios]

Thanks for your help. I had to make a fix with it but it appears to be working somewhat. Now can I display $totalI just by echoing it seeing how it is wrapped in a function?

<?php echo $totalI; ?>

function TotalI( $end, $start = 1)
$totalI = 0; // Reset to zero
for ($i = $start;$i <= $end; $i++){
    $totalI += $REProw["quest_" . $i]; //Add the value
}

retrun $totalI;
} 

[byron3@earthlink]

You need to provide the Upper limit of your loop and a start for your loop if you do not want to use 1 as the start.

function TotalI( $In_r, $end, $start = 1)
$totalI = 0; // Reset to zero
for ($i = $start;$i <= $end; $i++){
    $totalI += $In_r["quest_" . $i]; //Add the value
}

retrun $totalI;
} 

I hope that fix was being able to pass in an array....

<?php echo $totalI( $Input_r, $End_value, $Start_value ); ?>

[SMDStudios]

This is what I ended up with...

function TotalI( $end = 21, $start = 1) {
$totalI = 0; // Reset to zero
for ($i = $start;$i <= $end; $i++){
    $totalI += $REProw["quest_" . $i]; //Add the value
}
return $totalI;
} 

and then to display totalI on the page..

<?php echo $totalI; ?>



I see that you changed your previous example???