function FirstFactorial($num)
{
$total = 0;
if ($num == 1) {
//factorial can't be brought any lower
return 1;
} else {
//level of recursion of current number
//multiplied by factorial of number one less
return $num * FirstFactorial($num - 1);
}
}
<?php
/*
Have the function FirstFactorial(num) take the num parameter being passed and return the factorial of it
(ie. if num = 4, return (4 * 3 * 2 * 1)). For the test cases, the range will be between 1 and 18.
*/
function FirstFactorial($num)
{
$s = 1;
for ($i = 1; $i <= $num; $i++) {
$s = $s * $i;
}
return $s;
}
echo FirstFactorial(4);
