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Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today. # Can this questions can be broken down and explained?

What does the following code display?

```\$numbers = array(1,2,3,4);
\$total = count(\$numbers);
\$sum = 0;
\$loop = 0;

foreach(\$numbers as \$number) {
\$loop = \$loop + 1;
if (\$loop < \$total) {
\$sum = \$sum + \$number;
}
}

echo \$sum;
```

\$numbers = array(1,2,3,4)

\$total = count(\$numbers) = 4

For each:

Loop = 1 ; if 1 < 4 then sum = 0+1 =1

Loop = 2; if 2 < 4 then sum = 1+2 =3

Loop = 3; if 3 < 4 then sum = 3 + 3 = 6

Loop = 4; if 4 < 4 (not true)

Sum = 6 Thanks for breaking down that question it really helped A LOT. Here's a similar question I'm still struggling with... can you break this down as well?

```\$numbers = array(1,2,3,4);
\$total = count(\$numbers);
\$sum = 0;
\$output = "";
\$loop = 0;

foreach(\$numbers as \$number) {
\$loop = \$loop + 1;
if (\$loop < \$total) {
\$output = \$number . \$output;
}
}

echo \$output;

?>
```