Write a PHP script to calculate and print the factorial of a number using a for loop

 factorial:-

The factorial of a number is the function that multiplies the number by every natural number below it. Symbolically, factorial can be represented as "!". So, n factorial is the product of the first n natural numbers and is represented as n!

For example:-

5!=1*2*3*4*5=120

$${\displaystyle 5!=5\cdot 4\cdot 3\cdot 2\cdot 1=120\,.}$$

Alogritham:-

Step 1: Start

Step 2: Declare Variable n, fact, i

Step 3: Read number from User

Step 4: Initialize Variable fact=1 and i=1

Step 5: Repeat Until i<=number

            5.1 fact=fact*i

            5.2 i=i+1

Step 6: Print fact

Step 7: Stop

code:-

<?php

$num = 5;

$x = 1;

for($i=1;$i<=$num-1;$i++)

{

 $x*=($i+1); 

}

echo "The Factorial of  $num is: $x";

?>

output:-

The Factorial of  5 is: 120