Oh sorry, I thought it would be possible to upgrade the PHP using htaccess (like most other hosting do).
I think Piwik should work in 5.1.3, but only trying with latest version, will let us know if it works for sure. Otherwise, I hope free.fr will soon migrate to 5.3 or 5.4 !
I think Piwik should work in 5.1.3, but only trying with latest version, will let us know if it works for sure. Otherwise, I hope free.fr will soon migrate to 5.3 or 5.4 !