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Informations about the package cas

CAS – A Lightweight Computer Algebra System for PHP

**A lightweight, zero-dependency Computer Algebra System (CAS) library for PHP with step-by-step human-readable explanations.** [![Latest Version](https://img.shields.io/packagist/v/sobhanmohammadi/cas)](https://packagist.org/packages/sobhanmohammadi/cas) [![Required PHP Version](https://img.shields.io/packagist/php-v/sobhanmohammadi/cas)](https://packagist.org/packages/sobhanmohammadi/cas) [![License](https://img.shields.io/packagist/l/sobhanmohammadi/cas)](LICENSE) [![Total Downloads](https://img.shields.io/packagist/dt/sobhanmohammadi/cas)](https://packagist.org/packages/sobhanmohammadi/cas)

📖 About

CAS is a Computer Algebra System written entirely in PHP. Unlike numerical calculators that work with floating-point approximations, this library manipulates mathematical expressions symbolically — just like a human would when solving algebra problems by hand.

The killer feature? It explains every single step in plain, human-readable text (Persian & English). Whether you're building an educational platform, a math tutor bot, or simply need exact symbolic computation in your PHP application, this library has you covered — with absolutely zero external dependencies.

âœĻ Key Features

Category Details
ðŸ”Ī Symbolic Computation Exact arithmetic on integers, rationals, and complex numbers — no floating-point errors
📊 Algebraic Simplification Fully recursive simplification engine with convergence detection
ðŸ§Đ Equation Solving Symbolic & numeric solvers (currently linear; higher-order planned)
📝 Step-by-Step Explanations Every operation is recorded and explained in Persian & English
ðŸŒģ AST-Based Architecture All expressions are parsed into a tree structure for easy manipulation
ðŸ”Ē Rich Numeric Support Integers (GMP), Rationals, Complex numbers, π
ðŸŠķ Zero Dependencies Pure PHP — only needs GMP extension (bundled with PHP by default)
📐 PSR-4 Compliant Clean, modern namespace structure
⚡ Lightweight Minimal overhead; designed for embedding in larger projects

🚀 Installation

Install via Composer:


composer require sobhanmohammadi/cas

All versions of cas with dependencies

PHP Build Version
Package Version
Requires php Version >=7.4
ext-gmp Version *
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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