PHP Program to Find Factorial of a Number

By Expertwebadvisor | Last Updated: March 5, 2017 | In: PHP

In this post I am going to describe the PHP Program which tell us how to find Factorial of a number .Factorial of a number is the product of an integer and all the integers below it eg Factorial of 4 is 4*3*2*1=24 24 is the Factorial of 4.

PHP Program to Find Factorial of a Number


<?php
if(isset($_POST['submit'])){
	$number= $_POST['number'];
	$fact=1;
	for($i=$number;$i>1;$i--){
		$fact=$fact*$i;
	}
	echo "Factorial of the number is ".$fact;
}
?>
<html>
	<head>
		<title>Factorial</title>
	</head>
	<body>
		<form action="" method='POST'>
		<label for="number">Please Enter a Number</label>
		<input type="text" name="number" value="">
		<br><br>
		
		<input type="submit" value="Done" name="submit">
		</form>
	</body>
</html>

Program Output:
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