6) Write a Factorial Program .

Example 1:-

<?php  
$num = 4;  
$factorial = 1;  
for ($x=$num; $x>=1; $x--)   
{  
  $factorial = $factorial * $x;  
}  
echo "Factorial of $num is $factorial";  
?>  
 

Output

Factorial of $num is  24

Write a Factorial Program by using the user inputs .

Example 2:-

<html>  
<head>  
<title>Factorial Program using loop in PHP</title>  
</head>  
<body>  
<form method="post">  
    Enter the Number:<br>  
    <input type="number" name="number" id="number">  
    <input type="submit" name="submit" value="Submit" />  
</form>  
<?php   
    if($_POST){  
        $fact = 1;  
        //getting value from input text box 'number'  
        $number = $_POST['number'];  
        echo "Factorial of $number:<br><br>";  
        //start loop  
        for ($i = 1; $i <= $number; $i++){         
            $fact = $fact * $i;  
            }  
            echo $fact . "<br>";  
    }  
?>  
</body>  
</html>  
 

Output

Write a Factorial Program using Recursion in PHP .

Example 3:-

 <?php  
function fact ($n)  
{  
    if($n <= 1)   
    {  
        return 1;  
    }  
    else   
    {  
        return $n * fact($n - 1);  
    }  
}  
  
echo "Factorial of 6 is " .fact(6);  
?>  

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6) Write a Factorial Program .

Example 1:-

Write a Factorial Program by using the user inputs .

Example 2:-

Write a Factorial Program using Recursion in PHP .

Example 3:-