WARNING: You are browsing the documentation for Symfony 4.1 which is not maintained anymore. Consider upgrading your projects to Symfony 5.0.

The Symfony Polyfill / PHP 7.1 Component

4.1 version

Maintained

3.4 4.3 4.4 5.0 current 5.1 master

Unmaintained

2.8 4.0 4.2

The Symfony Polyfill / PHP 7.1 Component
- Installation
- Usage
  - Provided Functions

The Symfony Polyfill / PHP 7.1 Component¶

This component provides some PHP 7.1 features to applications using earlier PHP versions.

Installation¶

1	$ composer require symfony/polyfill-php71

Alternatively, you can clone the https://github.com/symfony/polyfill-php71 repository.

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 7.1.

Provided Functions¶

is_iterable

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