How to Switch PHP Versions on the Command Line for Ubuntu 16.04 with Apache?

Switching PHP Versions on the Command Line for Ubuntu 16.04 with Apache

When working with multiple PHP versions and Apache on Ubuntu 16.04, managing version switching can be a challenge, especially for the command line. Here's how to navigate this seamlessly:

Interactive Switching

For an immediate switch, utilize the following commands:

sudo update-alternatives --config php
sudo update-alternatives --config phar
sudo update-alternatives --config phar.phar

Manual Switching

To manually switch between PHP versions:

from PHP 5.6 to PHP 7.1 (Command Line)

sudo update-alternatives --set php /usr/bin/php7.1
sudo update-alternatives --set phar /usr/bin/phar7.1
sudo update-alternatives --set phar.phar /usr/bin/phar.phar7.1

from PHP 7.1 to PHP 5.6 (Command Line)

sudo update-alternatives --set php /usr/bin/php5.6

Remember to run sudo service apache2 restart to apply changes made to the Apache configuration.

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