symfony/polyfill-php72
Polyfill Php72
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that applications can maintain a consistent interface and remain compatible with current libraries even when running on outdated versions.
Features
- PHP 5.x Compatibility Polyfills - Implements core functions and constants from newer PHP versions to ensure compatibility with legacy environments.
- Language Feature Backporting - Implements core functions and constants from PHP 7.2 to ensure compatibility with older PHP versions.
- Runtime Version Checks - Verifies the PHP runtime version to determine whether to use native functions or the provided polyfills.
- Conditional Function Definitions - Provides the mechanism to define polyfill functions only if the native versions are missing in the PHP runtime.
- Cross-Version Compatibility Layers - Enables applications to maintain a consistent interface by filling in missing standard library functions across PHP versions.
- Legacy Runtime Support - Provides modern language features to outdated PHP environments to maintain compatibility with current libraries.
- Polyfill Implementations - Acts as a comprehensive polyfill for PHP 7.2 features in legacy environments.
- Standard Library Extensions - Fills gaps in the PHP core to ensure consistent behavior across different language versions.
