Module 6 Quiz: 1 st question

Question

It is about RETURN function:

What output results from the following code?
function func($arg) {
$result = 0;
for($i=0; $i<$arg; $i++) {
$result = $result + $i;
}
return $result;
}
echo func(5);

Why the answer is 10 instead of 15?Kind of messed up Return and Echo

Answer 1

$i<$arg this expression stops the loop when $i is equal to 5 so the body of the loop isn't ran and the last value of $i (5) isn't added to the variable $result.

0 + 1 + 2 + 3 + 4 = 10

Answer 2

As I read your final sentence, a return statement is used to return a value (a processed data) from a function to another code that calls the function (function caller), while echo does not return the value, instead, it outputs its arguments directly to the screen (browser window).

Answer 3

What the for loop does is keep summing up numbers until the limit is reached. So starting from 0, $result = 0+1+2+3+4 = 10
finally, return $result.
Hope this helped.

Answer 4

answer is ~ .