How To Install php-symfony-polyfill-php70 on Debian 9

In this tutorial we learn how to install php-symfony-polyfill-php70 on Debian 9. php-symfony-polyfill-php70 is Symfony polyfill backporting some PHP 7.0+ features to lower PHP versions

Introduction

In this tutorial we learn how to install php-symfony-polyfill-php70 on Debian 9.

What is php-symfony-polyfill-php70

php-symfony-polyfill-php70 is:

This component provides functions unavailable in releases prior to PHP 7.0:

  • intdiv
  • preg_replace_callback_array
  • error_clear_last
  • random_bytes and random_int (via php-random-compat)
  • *Error throwable classes

Compatibility notes:

To write portable code between PHP5 and PHP7, some care must be taken:

  • \*Error exceptions must be caught before \Exception;
  • after calling error_clear_last(), the result of $e = error_get_last() must be verified using isset($e['message'][0]) instead of null === $e.

The Symfony Polyfill project backports features found in the latest PHP versions and provides compatibility layers for some extensions and functions. It is intended to be used when portability across PHP versions and extensions is desired.

Symfony is a PHP framework, a set of tools and a development methodology.

There are three methods to install php-symfony-polyfill-php70 on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install php-symfony-polyfill-php70 Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install php-symfony-polyfill-php70 using apt-get by running the following command:

sudo apt-get -y install php-symfony-polyfill-php70

Install php-symfony-polyfill-php70 Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install php-symfony-polyfill-php70 using apt by running the following command:

sudo apt -y install php-symfony-polyfill-php70

Install php-symfony-polyfill-php70 Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install php-symfony-polyfill-php70 using aptitude by running the following command:

sudo aptitude -y install php-symfony-polyfill-php70

How To Uninstall php-symfony-polyfill-php70 on Debian 9

To uninstall only the php-symfony-polyfill-php70 package we can use the following command:

sudo apt-get remove php-symfony-polyfill-php70

Uninstall php-symfony-polyfill-php70 And Its Dependencies

To uninstall php-symfony-polyfill-php70 and its dependencies that are no longer needed by Debian 9, we can use the command below:

sudo apt-get -y autoremove php-symfony-polyfill-php70

Remove php-symfony-polyfill-php70 Configurations and Data

To remove php-symfony-polyfill-php70 configuration and data from Debian 9 we can use the following command:

sudo apt-get -y purge php-symfony-polyfill-php70

Remove php-symfony-polyfill-php70 configuration, data, and all of its dependencies

We can use the following command to remove php-symfony-polyfill-php70 configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge php-symfony-polyfill-php70

Dependencies

php-symfony-polyfill-php70 have the following dependencies:

References

Summary

In this tutorial we learn how to install php-symfony-polyfill-php70 package on Debian 9 using different package management tools: apt, apt-get and aptitude.