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_rand_gen_funiform() Function.
The built-in PHP stats_rand_gen_funiform() function generates uniform float between low (exclusive) and high (exclusive).
The built-in PHP stats_rand_gen_funiform() function generates uniform float between low (exclusive) and high (exclusive).
Syntax
Following below is the syntax to use this function -
float stats_rand_gen_funiform( float $low, float $high )
Parameter Details
Sr.No | Parameter | Description |
---|---|---|
1 | low | The lower bound (inclusive) |
2 | high | The upper bound (exclusive) |
Return Value
This built-in PHP function returns a random deviate from uniform distribution from low to high.
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
Following example computes the random deviation from the uniform distribution by passing $low < $high-
<?php $x = stats_rand_gen_funiform(1.5, 2.5); var_dump(is_float($x)); var_dump($x > 1.5); var_dump($x < 2.5); ?>
Output
When the above code is executed, it will produce the following result -
bool(true) bool(true) bool(true) bool(true)
Example2
Following example computes the random deviation from the uniform distribution -
<?php $x = stats_rand_gen_funiform(1.5, 1.5); var_dump($x); ?>
Output
When the above code is executed, it will produce the following result -
float(1.5)
Example3
The following below is an error case. In the below example, we have passed low > high. A warning is shown in logs -
<?php // error cases var_dump(stats_rand_gen_funiform(2.5, 1.5)); // low > high ?>
Output
The above code will produce the following result and a warning in logs PHP Warning: stats_rand_gen_funiform(): low greater than high. low: 2.500000E+0 high: 1.500000E+0
bool(false)
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the built-in stats_rand_gen_gamma() Function.
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Thanks for reading and bye for now.