function calcFactorial($num) { $val = 1; for ($x = $num; $x >= 1; $x--) { $val *= $x; } return $val; } echo calcFactorial(5);
function calcFactorial($num) { $val = 1; for ($x = $num; $x >= 1; $x--) { $val *= $x; } return $val; } echo calcFactorial(5);