PHP 8 Compatibility

vendor/symfony/polyfill-php80/README.md

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+Symfony Polyfill / Php80
+========================
+
+This component provides features added to PHP 8.0 core:
+
+- `Stringable` interface
+- [`fdiv`](https://php.net/fdiv)
+- `ValueError` class
+- `UnhandledMatchError` class
+- `FILTER_VALIDATE_BOOL` constant
+- [`get_debug_type`](https://php.net/get_debug_type)
+- [`preg_last_error_msg`](https://php.net/preg_last_error_msg)
+- [`str_contains`](https://php.net/str_contains)
+- [`str_starts_with`](https://php.net/str_starts_with)
+- [`str_ends_with`](https://php.net/str_ends_with)
+- [`get_resource_id`](https://php.net/get_resource_id)
+
+More information can be found in the
+[main Polyfill README](https://github.com/symfony/polyfill/blob/main/README.md).
+
+License
+=======
+
+This library is released under the [MIT license](LICENSE).