PHPBignum

A bignum library for PHP.

Type	Addition	Subtraction	Division	Multiplication	Square root	Power
BigInt	done	done	done	done	done	done
BigFloat	done	done	done	done	done	done

Setting up for developers

Just clone the project, go to the project directory and run composer install and should be good to go! Oh and also for running tests you should do vendor/phpunit/phpunit/phpunit tests/.

Installation

The package is installable via composer require hpez/php-bignum or packagist repo

Usage

<?php

// BigInteger Addition
$bigInt1 = new BigInt('123456')
$bigInt2 = new BigInt('654321');
$bigInt1->add($bigInt2);
echo $bigInt1; // "777777"

// BigFloat Addition
$bigFloat1 = new BigFloat('123456.111');
$bigFloat2 = new BigFloat('654321.22');
$bigFloat1->add($bigFloat2)
echo $bigFloat1; // "777777.331"

// BigInteger Subtraction
$bigInt3 = new BigInt('777777');
$bigInt4 = new BigInt('654321');
$bigInt3->sub($bigInt4);
echo $bigInt3; // "123456"

// BigFloat Subtraction
$bigFloat3 = new BigFloat('123456.111');
$bigFloat4 = new BigFloat('654321.22');
$bigFloat3->sub($bigFloat4);
echo $bigFloat3; // results "530865.109"

// BigInteger Division
$bigInt5 = new BigInt('777777');
$bigInt6 = new BigInt('654321');
$bigInt5->div($bigInt6);
echo $bigInt5; // "1"

// BigFloat Division
$bigFloat5 = new BigFloat('123456.111');
$bigFloat6 = new BigFloat('654321.22');
$bigFloat5->div($bigFloat6);
echo $bigFloat5; // "0.188678"

// BigInteger Multiplication
$bigInt7 = new BigInt('777777');
$bigInt8 = new BigInt('654321');
$bigInt7->multiply($bigInt8);
echo $bigInt7; // "508915824417"

// BigFloat Multiplication
$bigFloat7 = new BigFloat('123456.111');
$bigFloat8 = new BigFloat('654321.22');
$bigFloat7->multiply($bigFloat8);
echo $bigFloat7; // "80779953165.97542"

// BigInteger Modulo
$bigInt9 = new BigInt('777777');
$bigInt10 = new BigInt('654321');
$bigInt9->mod($bigInt10);
echo $bigInt9; // "123456"

// BigInteger Power
$bigInt11 = new BigInt('777777');
$bigInt12 = new BigInt('1');
$bigInt11->pow($bigInt12);
echo $bigInt11; // "777777"

// BigFloat Power
$bigFloat9 = new BigFloat('12345.12345');
$bigInt13 = new BigInt('3');
$bigFloat9->pow($bigInt13);
echo $bigFloat9 // "1881422405168.320420453463625"

// BigInteger Square Root
$bigInt14 = new BigInt('10000');
$bigInt15->sqrt();
echo $bigInt14; // "100"

// BigFloat Square Root
$bigFloat10 = new BigFloat('2');
$bigFloat11->sqrt(7);
echo $bigFloat10; // "1.4142136"

// BigInteger Lesser-Than
$bigInt16 = new BigInt('1234567890');
$bigInt17 = new BigInt('1234567891');
echo $bigInt16->isLesserThan($bigInt17); // True

$bigInt18 = new BigInt('1234567891');
$bigInt19 = new BigInt('1234567891');
echo $bigInt18->isLesserThan($bigInt19); // False

// BigInteger Bigger-Than
$bigInt20 = new BigInt('1234567891');
$bigInt21 = new BigInt('1234567890');
echo $bigInt20->isBiggerThan($bigInt21); // True

$bigInt22 = new BigInt('1234567891');
$bigInt23 = new BigInt('1234567891');
echo $bigInt22->isBiggerThan($bigInt23); // False

Roadmap

The goal of this project is making a complete Bignum library for PHP language, so operations other than the ones mentioned in the table should be added too (trigonometric functions, ...).

Contribution

Any contribution in the form of an issue or a pull request is more than welcome! Also if you have any questions, feel free to create a new issue or comment on existing ones.