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.
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 )
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)
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.
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Thanks for reading and bye for now.