php code to calculate factorial of given number code example

Example 1: php program to find factorial of a number using function

<?php
function Factorial($number){ 
    if($number <= 1){   
        return 1;   
    }   
    else{   
        return $number * Factorial($number - 1);   
    }   
} 
  
$number = 5; 
$fact = Factorial($number); 
echo "Factorial = $fact";  //output : 120
?>

Example 2: php program to find factorial of a number using function

function Factorial($number){ 
    if($number <= 1){   
        return 1;   
    }   
    else{   
        return $number * Factorial($number - 1);   
    }   
} 
  
$number = 5; 
$fact = Factorial($number); 
echo "Factorial = $fact";  //output : 120
?>