The Symfony Polyfill / PHP 7.3 Component

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The Symfony Polyfill / PHP 7.3 Component
- Installation
- Usage
  - Provided Functions

The Symfony Polyfill / PHP 7.3 Component¶

This component provides some PHP 7.3 features to applications using earlier PHP versions.

Installation¶

1	$ composer require symfony/polyfill-php73

Note

If you install this component outside of a Symfony application, you must require the vendor/autoload.php file in your code to enable the class autoloading mechanism provided by Composer. Read this article for more details.

Usage¶

Once this component is installed in your application, you can use the following functions, no matter if your PHP version is earlier than PHP 7.3.

Provided Functions¶

is_countable
hrtime
array_key_first
array_key_last

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.