Counting total of a variable in for loop

[slyte33]

Ok so let's say I have this:

 

for($i=1;$i<=5; $i++)
{
$rand = mt_rand(0, 10);
echo $rand;
echo "<br>";
}

 

As you can see, it will generate a random number 1-10 5 times.

What I want to do is get the total number recorded out of those randoms.

 

Let's say the outcome was this:

 

1

2

9

6

3

 

The total number = 21

 

All feedback appreciated, thanks

 

 

[cags]

$total = 0;

for($i=1;$i<=5; $i++) {
   $rand = mt_rand(0, 10);
   echo $rand;
   echo "<br>";
   $total += $rand;
}
echo $total;

[Maq]

Have a variable outside the loop that can tabulate the total.

 

$total = 0;
for($i=1;$i{
   $rand = mt_rand(0, 10);
   echo $rand;
   $total += $rand;   
   echo "
";
}

[slyte33]

Thank you very much

 

I have another question if you don't mind now, what exactly does += do?

Does this mean I could count the total fields in a row of a mysql table too?

Example:

select * from something

while($something=$example->fetchrow())

{

$ex += $something[count_total_number_of_all_rows_in_field]

}

 

So basically += can be used in a for and while loop?

[cags]

$a += $b means $a = $a + $b.

[Maq]

Does this mean I could count the total fields in a row of a mysql table too?

Example:

select * from something

 

MySQL supports aggregate functions that you can utilize such as SUM().  This would be faster than calculating the total in PHP.

[slyte33]

Thanks