Piwik 3 requires PHP 5.5.9

[mattab]

Steps to take to effectively increase PHP requirements in Piwik:

• [x] increase requirements in source code: https://github.com/piwik/piwik/blob/master/core/testMinimumPhpVersion.php
• [x] update requirements user guide: https://piwik.org/docs/requirements
• [x] update PHP requirement in composer.json -> config -> platform -> php
• [x] re-generate the composer.lock with this required PHP version as new packages may be available

Follows up: #8156

[tsteur]

increase requirements in source code: https://github.com/piwik/piwik/blob/master/core/testMinimumPhpVersion.php

is done. We need to decide if we require at least 5.5.0 or maybe a little higher version such as 5.5.9 . Not sure if there are some weird problems etc in 5.5.0 or 5.5.1 ...

[tsteur]

Drupal 8 (https://www.drupal.org/docs/7/system-requirements/overview and https://www.drupal.org/node/2508231 ) and Symfony (http://symfony.com/doc/current/reference/requirements.html ) require PHP 5.5.9 so it might be a good idea to directly require 5.5.9 as well. Gives us the possibility to use some Symfony components eventually etc

[tsteur]

ping @mattab @sgiehl any thoughts?

[sgiehl]

Other projects used PHP 5.5.9 for new requirement, as well. So guess that should be fine. Examples:

• https://laravel.com/docs/5.3/releases#laravel-5.1
• https://getgrav.org/blog/changing-php-requirements-to-5.5

[tsteur]

Awesome. Seeing Guzzle and the AWS SDK require 5.5.9 as well. Guzzle might be interesting for us to use eventually. @matt can you confirm re 5.5.9 re usage of Piwik etc?

[mattab]

5.5.9 :+1: