Symfony Polyfill / Php73

This component provides functions added to PHP 7.3 core:

• <code>array_key_first</code>
• <code>array_key_last</code>
• <code>hrtime</code>
• <code>is_countable</code>
• <code>JsonException</code>

More information can be found in the main Polyfill README.

License

This library is released under the MIT license.