I have an installation of magento 1.9.1.0 in a dedicated server with virtual min.Everything works ok but I noticed that my server runs Mysql version 5.1.73 and PHP version 5.3.3 . I want to update them in what magento suggests. Will I have problems with the site? I want to upgrade to PHP 5.5 and Mysql 5.6 but I am afraid for my existing site if it works after the upgrade. Can anyone help? Thank you
Magento version 1.9.1.0 direectly supports PHP 5.4 & 5.5 http://magento.com/resources/system-requirements and http://magento.com/resources/previous-magento-system-requirements for previous requirements. As you can see, Magento also supports MySQL 5.6 (and many of our stores run it, or Percona).