php

Factorial in PHP Using For Loop

In this tutorial, we are going to see how to write a PHP function to calculate the factorial of a given number in PHP using for loop. The factorial of a number is the product of all integers between 1 and itself.
 

Factorial in PHP Using For Loop
<?php
	function fact($n){ 
		$f = 1; 
		for ($i = 1; $i <= $n; $i++){ 
		  $f = $f * $i; 
		} 
		return $f; 
	} 
	  
	$n = 5; 
	$f = fact($n); 
	echo "Factorial of $n is $f"; 
?>

Output:

Factorial of 5 is 120
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