How to Switch Between PHP Versions (5.6 and 7.1) on the Command Line in Ubuntu 16.04?

Switch PHP Versions on Command Line in Ubuntu 16.04

Issue: How can you switch between PHP versions (5.6 and 7.1) in the command line on Ubuntu 16.04 while using the internal PHP web server?

Solution:

There are two main methods to switch PHP versions in the command line:

1. Interactive Switching Mode:

   Use the following commands to enter the interactive switching mode:

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

   Select the desired PHP version and confirm your choice.

2. Manual Switching:

   From PHP 5.6 to PHP 7.1

   • Apache:

     • sudo a2dismod php5.6
     • sudo a2enmod php7.1
     • sudo service apache2 restart

   • 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

   • Apache:

     • sudo a2dismod php7.1
     • sudo a2enmod php5.6
     • sudo service apache2 restart

   • Command Line:

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

Credit:
The provided solution is sourced from:

• [Stack Overflow](https://stackoverflow.com/questions/41877098/switch-php-versions-on-commandline-ubuntu-16-04)

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