PHP | stats_stat_factorial() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP stats_stat_factorial() function.

The built-in stats_stat_factorial() function in PHP returns the factorial of an integer.

Syntax

Following below is the syntax to use this function -

float stats_stat_factorial( int $n )

READ: PHP | stats_stat_correlation() Function

Parameter Details

Sr.No	Parameter	Description
1	n	An integer

Return Value

This PHP function returns the factorial of an integer, n.

Dependencies

This built-in function was first introduced in statistics extension (PHP version 4.0.0 and PEAR v1.4.0). In this tutorial guide, we used the latest release of stats-2.0.3 (PHP v7.0.0 or newer and PEAR version 1.4.0 or newer).

Example1

In the below example, we have compute the factorial of an integer 0 -

<?php
   var_dump(stats_stat_factorial(0));
?>

Output

When the above code is executed, it will produce the following result -

float(1)

Example2

In the below example, we have compute the factorial of an integer 1 -

<?php
   var_dump(stats_stat_factorial(1));
?>

Output

When the above code is executed, it will produce the following result -

float(1)

Example3

In the below example, we have compute the factorial of an integer 2 -

<?php
   var_dump(stats_stat_factorial(2));
?>

Output

When the above code is executed, it will produce the following result -

float(2)

Example4

In the below example, we have compute the factorial of an integer 3 -

<?php
   var_dump(stats_stat_factorial(3));
?>

Output

When the above code is executed, it will produce the following result -

float(6)

Example5

The following is an error case. In the below example, we passed an empty parameter. A warning is shown in logs -

<?php
   // error cases
   var_dump(stats_stat_factorial());
?>

Output

The above code will produce the following result and a warning in logs PHP Warning: stats_stat_factorial(): expects exactly 1 parameter, 0 given

bool(false)

READ: PHP | stats_rand_gen_gamma() Function

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we will be studying about the PHP stats_stat_independent_t() Function.

Feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

Follow us on our various social media platforms to stay updated with our latest tutorials. You can also subscribe to our newsletter in order to get our tutorials delivered directly to your emails.

Thanks for reading and bye for now.