Open Source PHP Libraries for Linux

PhpSpreadsheet is a library written in pure PHP and offers a set of classes that allow you to read and write various spreadsheet file formats such as Excel and LibreOffice Calc. PhpSpreadsheet is a library written in pure PHP and offers a set of classes that allow you to read and write various spreadsheet file formats such as Excel and LibreOffice Calc. Support for PHP versions will only be maintained for a period of six months beyond the end of life of that PHP version. Use composer to install PhpSpreadsheet into your project. Or also download the documentation and samples if you plan to use them. A good way to get started is to run some of the samples. Don't forget to download them via --prefer-source composer flag. And then serve them via PHP built-in webserver. PhpSpreadsheet relies on Composer autoloader. So before working with PhpSpreadsheet in standalone, be sure to run composer install.

Omnipay is a payment processing library for PHP. It has been designed based on ideas from Active Merchant, plus experience implementing dozens of gateways for CI Merchant. It has a clear and consistent API, is fully unit tested, and even comes with an example application to get you started. You can learn one API and use it in multiple projects using different payment gateways. If you need to change payment gateways you won’t need to rewrite your code. Most official PHP payment gateway libraries are a mess. Most payment gateways have exceptionally poor documentation. So, why use Omnipay instead of a gateway’s official PHP package/example code? Because you are writing a shopping cart and need to support multiple gateways.

Brick\Money is a PHP library designed to provide precise and reliable handling of monetary values using arbitrary-precision arithmetic, ensuring accuracy in financial calculations of any scale. Built on top of the brick/math library, it avoids floating point errors by using exact decimal representations, making it suitable for applications where correctness is critical, such as accounting and financial services. The library supports ISO 4217 currency standards and includes comprehensive tools for working with currency units, conversions, and rounding strategies. It is designed to handle large numbers and complex operations without loss of precision, which is essential for enterprise-level financial systems. Brick\Money also emphasizes immutability, ensuring that operations return new objects rather than modifying existing ones, which improves predictability and safety in codebases.

Set of classes for PHP that allow Excel XML files to be generated dynamically. Nearly a full implementation of the MS XML architecture. Requires PHP 5+ Does not require any XML libraries

PHP and VB6 classes for generating dynamic PDF reports and forms from XPF files designed with Visual2PDF. PHP class uses TCPDF to generate PDF from Visual2PDF documents. VB6 class uses optimized mjwPDF class to generate PDF.

Swap is a PHP library designed to retrieve and manage currency exchange rates from multiple providers through a unified and extensible interface. It acts as an abstraction layer over various exchange rate APIs such as Fixer, currencylayer, and European Central Bank data sources, allowing developers to switch providers or combine them without changing application logic. The library supports both real-time and historical exchange rates, making it suitable for financial applications that require accurate and time-sensitive data. One of its key strengths is its ability to define fallback providers, ensuring reliability even if a primary data source fails. Swap also includes optional caching mechanisms to reduce API calls and improve performance in production environments. It integrates seamlessly with frameworks like Symfony and Laravel, making it easy to incorporate into existing PHP applications.

Vertopal PHP is a PHP library for easy access to Vertopal file conversion API. Using Vertopal PHP, you can get started quickly and easily implement the support of converting +350 file formats into your project.

dompdf - the PHP 5 HTML to PDF converter. dompdf is a (mostly) CSS compliant HTML rendering engine written in PHP. It supports external stylesheets, inline style tags, and the style attributes of individual HTML elements. Requires PHP 5.

PHPOpenDocument is a PHP librairy designed to use OpenDocument file as a template for PHP. It's a kind of PHPLib for OpenOffice document.