PHP program to print factorial of a number:
The below program prints factorial of a number using a loop. The PHP echo statement is used to output the result on the screen. The factorial of a number can be calculated for positive integers only and is represented by n!.
n! = n*(n-1)*(n-2)*......*1 0! = 1
Example
<!DOCTYPE html> <html> <body> <?php $n = 10; $f = 1; for ($i=$n; $i>=1; $i--) { $f = $f * $i; } echo "$n! = $f"; ?> </body> </html> |
Output
10! = 3628800 |