THE WORLD'S LARGEST WEB DEVELOPER SITE

PHP Tutorial

PHP HOME PHP Intro PHP Install PHP Syntax PHP Comments PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Math PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals PHP RegEx

PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

PHP Advanced

PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Callback Functions PHP JSON PHP Exceptions

PHP OOP

PHP What is OOP PHP Classes/Objects PHP Constructor PHP Destructor PHP Access Modifiers PHP Inheritance PHP Constants PHP Abstract Classes PHP Traits PHP Static Methods PHP Static Properties PHP Namespaces

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data

PHP XML

PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM

PHP - AJAX

AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX Poll

PHP Examples

PHP Examples PHP Compiler PHP Quiz PHP Exercises PHP Certificate

PHP Reference

PHP Overview PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Filesystem PHP Filter PHP FTP PHP JSON PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP Network PHP RegEx PHP SimpleXML PHP Stream PHP String PHP Variable Handling PHP XML Parser PHP Zip PHP Timezones

PHP Math


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


PHP pi() Function

The pi() function returns the value of PI:

Example

<?php
echo(pi()); // returns 3.1415926535898
?>
Try it Yourself »

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

<?php
echo(min(0, 150, 30, 20, -8, -200));  // returns -200
echo(max(0, 150, 30, 20, -8, -200));  // returns 150
?>
Try it Yourself »


PHP abs() Function

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

Example

<?php
echo(abs(-6.7));  // returns 6.7
?>
Try it Yourself »

PHP sqrt() Function

The sqrt() function returns the square root of a number:

Example

<?php
echo(sqrt(64));  // returns 8
?>
Try it Yourself »

PHP round() Function

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

Example

<?php
echo(round(0.60));  // returns 1
echo(round(0.49));  // returns 0
?>
Try it Yourself »

Random Numbers

The rand() function generates a random number:

Example

<?php
echo(rand());
?>
Try it Yourself »

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

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

Example

<?php
echo(rand(10, 100));
?>
Try it Yourself »

Complete PHP Math Reference

For a complete reference of all math functions, go to our complete PHP Math Reference.

The PHP math reference contains description and example of use, for each function.