How to find the minimum and maximum of three variables without the min and max functions?

Question

css

It is necessary to determine the sum of the maximum and minimum of the three numbers $a, $b, $c.
NOT APPLYING THE FUNCTIONS min and max.
With functions, I know how to do it. And without them, how to write code to determine the sum of the maximum and minimum of the three numbers $a, $b, $c.
Thank you.
Or throw where such examples are considered.

Answer 1

https://codepen.io/inkshio/pen/OGeqqO

Answer 2

https://jsfiddle.net/u59o413n/

Answer 3

$sum = $a > $b ? ($a > $c ? $a + ($b < $c ? $b : $c) : $b + $c) : ($b > $c ? $b + ($a < $c ? $a : $c) : $c + $a);

Answer 4

$numbers = [$a, $b, $c];
sort($numbers);

echo reset($numbers) + end($numbers);

Answer 5

function sumMinMax(...$numbers)
{
    $min = PHP_INT_MAX;
    $max = 0;
    foreach ($numbers as $key => $number) {
        if ($number > $max)
            $max = $number;
        if ($number < $min)
            $min = $number;
    }
    return $min + $max;
}

$a = 1;
$b = 2;
$c = 3;
$d = 4;
$e = 5;
$f = 6;
echo sumMinMax($a,$b,$c,$d,$e,$f);