Introduction
PHP is a server scripting language, and It is a powerful tool for making interactive and dynamic Web-pages. I have used WampServer 2.2 for following example.
<?php $num = 5; $x = 1; for($i=1;$i<=$num-1;$i++) { $x*=($i+1); } echo "The Factorial of $num is: $x"."\n"; ?>