Slip no. 21. Write a PHP
script to accept the number from user and write a function to calculate the
factorial of a given number ( non-negative integer). The function accept the
number as argument.
PHP file :
<?php
/* Function to get Factorial of a Number */
function getFactorial($num)
{
$fact = 1;
for($i = 1; $i <= $num ;$i++)
$fact = $fact * $i;
return $fact;
}
?>
<!doctype
html>
<html>
<head>
<title>Factorial
Program using PHP</title>
</head>
<body>
<form
action = "" method="post">
Enter the
number whose factorial requires <Br />
<input
type="number" name="number" id="number"
maxlength="4" autofocus required/>
<input
type="submit" name="submit" value="Submit" />
</form>
<?php
if(isset($_POST['submit']) and $_POST['submit'] == "Submit")
{
if(isset($_POST['number']) and
is_numeric($_POST['number']))
echo 'Factorial Of Number: <strong>'.getFactorial($_POST['number']).'</strong>';
}
?>
</body>
</html>
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