# PHP Math In this tutorial, you will learn about PHP Math step by step. So, without much to do, let’s get started.

PHP has a set of math functions that allows you to perform mathematical tasks on numbers.

In this tutorial, you will learn-

## PHP pi() Function

The pi() function returns the value of PI:

Example

```<!DOCTYPE html>
<html>
<body>

<?php
echo(pi());
?>

</body>
</html>
```

## PHP min() and max() Functions

The min() and max() functions can be used to find the lowest or highest value in a list of arguments:

Example

```<!DOCTYPE html>
<html>
<body>

<?php
echo(min(0, 150, 30, 20, -8, -200) . "<br>");
echo(max(0, 150, 30, 20, -8, -200));
?>

</body>
</html>
```

## PHP abs() Function

The abs() function returns absolutely the (positive) value of a number:

Example

```<!DOCTYPE html>
<html>
<body>

<?php
echo(abs(-6.7));
?>

</body>
</html>```

## PHP sqrt() Function

The sqrt() feature returns the square root of a variety of:

Example

```<!DOCTYPE html>
<html>
<body>

<?php
echo(sqrt(64) . "<br>");
echo(sqrt(0) . "<br>");
echo(sqrt(1) . "<br>");
echo(sqrt(9));
?>

</body>
</html>
```

## PHP round() Function

The round() function rounds a floating-point number to its nearest integer:

Example

```<!DOCTYPE html>
<html>
<body>

<?php
echo(round(0.60) . "<br>");
echo(round(0.50) . "<br>");
echo(round(0.49) . "<br>");
echo(round(-4.40) . "<br>");
echo(round(-4.60));
?>

</body>
</html>
```

## Random Numbers

The rand() function generates a random number:

Example

```<!DOCTYPE html>
<html>
<body>

<?php
echo(rand());
?>

</body>
</html>
```

To get more control over the random number, you could add the elective min and max parameters to specify the lowest integer and the highest integer to be returned.

For example, if you want a random integer among 10 and 100 (inclusive), use rand(10, 100):

Example

```<!DOCTYPE html>
<html>
<body>

<?php
echo(rand(10, 100));
?>

</body>
</html>
```

PHP Installation

PHP Syntax

PHP Variables

PHP Variables Scope

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PHP Tutorial (worldofitech.com) ### PHP Numbers 