You are browsing the Symfony 4 documentation, which changes significantly from Symfony 3.x. If your app doesn't use Symfony 4 yet, browse the Symfony 3.4 documentation.
The Symfony Polyfill / APCu Component
The Symfony Polyfill / APCu Component¶
This component provides
apcu_*functions and the
APCUIteratorclass to users of the legacy APC extension.
$ composer require symfony/polyfill-apcu
Alternatively, you can clone the https://github.com/symfony/polyfill-apcu repository.
If you install this component outside of a Symfony application, you must
vendor/autoload.php file in your code to enable the class
autoloading mechanism provided by Composer. Read
this article for more details.
Once this component is installed in your application, you can use the following classes and functions, no matter if the PHP APCu extension is installed or not in your server. The only requirement is to have installed at least the legacy APC extension.
This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.