My webhost has recently updated to PHP 7.0 and provided a plugin to make sure my WordPress site was compatible. Although I saw in a forum thread from June 2016 (PHP 7 compatibility?) that Piwik is PHP 7 compatible, my webhost’s tool identified the following potential errors:
FILE: /home/…/public_html/wp-content/plugins/wp-piwik/proxy/piwik.php
FOUND 1 ERROR AFFECTING 1 LINE
98 | ERROR | INI directive ‘magic_quotes_runtime’ is deprecated since PHP 5.3 and removed since PHP 5.4.
FILE: /home/…/public_html/wp-content/plugins/wp-piwik/classes/WP_Piwik.php
FOUND 1 ERROR AFFECTING 1 LINE
353 | ERROR | Using ‘break’ outside of a loop or switch structure is invalid and will throw a fatal error since PHP 7.0
I’m unable to use the tool to switch over to PHP 7.0 until no errors are detected.