[Mr.Anonymous]

I have this simple for loop:

Код:

for($i = 1; $i <= 7; $i++) {

    echo $i . "<br>";

}

Which outputs:

Код:

1
2
3
4
5
6
7

Now what I want is to add all the previous numbers on each loop. So the output should be:

Код:

1
2 // current number + all above
3 // current number + all above
6 // current number + all above
12 // current number + all above
24 // current number + all above
48 // current number + all above

I tried this:

Код:

$sum = 0;

for($i = 1; $i <= 7; $i++) {

    $sum = $sum + $i;

    echo $sum . "<br>";

}

But this is the output I get:

Код:

1
3
6
10
15
21
28

How can I get the desired results?