# symfony/polyfill-php72

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4,742 stars · 6 forks · MIT

## Links

- GitHub: https://github.com/symfony/polyfill-php72
- Homepage: https://symfony.com/polyfill-php72
- awesome-repositories: https://awesome-repositories.com/repository/symfony-polyfill-php72.md

## Topics

`compatibility` `component` `javascript` `polyfill` `portable` `shim` `symfony` `symfony-component` `symfony-polyfill`

## Description

This project is a PHP compatibility polyfill designed to backport core functions and constants from PHP 7.2 to older versions of the language. It serves as a PHP standard library extension and version backport, providing a compatibility layer that fills gaps in the PHP core to ensure consistent behavior across different environments.

The library enables cross-version code portability by implementing missing standard library functions, allowing newer language features to run on legacy PHP environments. This ensures that applications can maintain a consistent interface and remain compatible with current libraries even when running on outdated versions.

## Tags

### Development Tools & Productivity

- [PHP 5.x Compatibility Polyfills](https://awesome-repositories.com/f/development-tools-productivity/php-5-x-compatibility-polyfills.md) — Implements core functions and constants from newer PHP versions to ensure compatibility with legacy environments.

### Programming Languages & Runtimes

- [Language Feature Backporting](https://awesome-repositories.com/f/programming-languages-runtimes/language-feature-backporting.md) — Implements core functions and constants from PHP 7.2 to ensure compatibility with older PHP versions.
- [Conditional Function Definitions](https://awesome-repositories.com/f/programming-languages-runtimes/conditional-function-definitions.md) — Provides the mechanism to define polyfill functions only if the native versions are missing in the PHP runtime.
- [Cross-Version Compatibility Layers](https://awesome-repositories.com/f/programming-languages-runtimes/cross-version-compatibility-layers.md) — Enables applications to maintain a consistent interface by filling in missing standard library functions across PHP versions.
- [Legacy Runtime Support](https://awesome-repositories.com/f/programming-languages-runtimes/legacy-runtime-support.md) — Provides modern language features to outdated PHP environments to maintain compatibility with current libraries.
- [Polyfill Implementations](https://awesome-repositories.com/f/programming-languages-runtimes/polyfill-implementations.md) — Acts as a comprehensive polyfill for PHP 7.2 features in legacy environments.
- [Standard Library Extensions](https://awesome-repositories.com/f/programming-languages-runtimes/standard-library-extensions.md) — Fills gaps in the PHP core to ensure consistent behavior across different language versions.

### DevOps & Infrastructure

- [Runtime Version Checks](https://awesome-repositories.com/f/devops-infrastructure/dependency-management/version-compatibility-management/version-compatibility-utilities/feature-version-checks/runtime-version-checks.md) — Verifies the PHP runtime version to determine whether to use native functions or the provided polyfills.