getting total sum of numbers?

Anon

Hi:

Can someone please look at this code below?

I'm wanting to know how to add up all three numbers submitted threw the form to make up a total sum of the three numbers.

If anyone can help me on this that would be great!

Thanks,
Kash Kurcura

$number = 3;

echo "enter 3 numbers into the areas below, how can i make 
it so when someone hits enter it adds up the three numbers?";
echo "<form action=\"?op=do\" method=\"post\">";
for($i=0;$i<$number; $i++) { 
echo "<input type='text' name='field[$i]' size='4'> ";
echo "<input type='hidden' name='number' value='$number'><br> ";
} 
echo "<INPUT type=submit value=\"enter\">";
echo "</form>";

if($op=="do"){

for($i=0; $i<$number; $i++) {
echo "$field[$i]";
}

}

dbchip2000

Try This, take out the # signs as they indicate what was added

$number = 3;

echo "enter 3 numbers into the areas below, how can i make
it so when someone hits enter it adds up the three numbers?";
echo "<form action=\"?op=do\" method=\"post\">";
for($i=0;$i<$number; $i++) {
echo "<input type='text' name='field[$i]' size='4'> ";
echo "<input type='hidden' name='number' value='$number'><br> ";
}
echo "<INPUT type=submit value=\"enter\">";
echo "</form>";

if($op=="do"){

$total=0;

for($i=0; $i<$number; $i++) {
echo "$field[$i]";

$total+=$field[$i];

}
}

echo "<br>$total";

Anon

You have 2 errors:

$number = 3;

echo "enter 3 numbers into the areas below, how can i make
it so when someone hits enter it adds up the three numbers?";
echo "<form action=\"?op=do\" method=\"post\">";

// your action is "?op=do", which will default
// to index.html (or index.php, or whatever
// your index page is.) Since the index page
// is not always this script, you have to
// something like
// action=\"this_script_name.php?op=do\"

for($i=0;$i<$number; $i++) {
echo "<input type='text' name='field[$i]' size='4'> ";
echo "<input type='hidden' name='number' value='$number'><br> ";
}
echo "<INPUT type=submit value=\"enter\">";
echo "</form>";

if($op=="do"){

for($i=0; $i<$number; $i++) {
echo "$field[$i]";

// here you're not adding the three numbers;
// you're just outputting them.
// create a variable that will hold the sum
// and add to that number in every loop.
}
}

Diego

Anon

Works great now! thanks for your help. I thought it would be something simple like that :-)

Kash

Anon

You can do 1 of 2 things: have 3 seperate forms, with 3 seperate names: num1 num2 num3

on add.php do this:

$total = ($num1 + $num2 + $num3)

or if you want it to be an array

$total = ($field[1] + $field[2] + $field[3]);

Anon

actually field[0] 1 and 2

majik-sheff

so these numbers are coming back in an array, right?

$field[1]
$field[2]
$field[3]
etc...

just do this:

$sum = array_sum($field);