Polyfill Php71 Laravel Package

symfony/polyfill-php71 backports key features from PHP 7.1 to older PHP versions, letting libraries use modern APIs without dropping support for legacy runtimes. It is part of the Symfony Polyfill family and integrates seamlessly through Composer autoloading—simply require the package and the missing functionality becomes available globally with no configuration.

• Adds the is_iterable() function for detecting array-or-Traversable values
• Provides Closure::fromCallable() to convert callables into closures
• Defines the PHP_FLOAT_EPSILON, PHP_FLOAT_MIN, PHP_FLOAT_MAX, and PHP_FLOAT_DIG constants
• Guards every declaration with function_exists/defined checks to avoid conflicts
• Lightweight, dependency-free, and safe to require alongside other polyfills