Here is table with compatibility of Prestashop versions with PHP versions:
Recently, cases of infected e-shops on the Prestashop platform have been spreading, caused by a vulnerability that allows SQL injection and potentially stealing of customer’s payment information.
Here are some hostings, that are suitable for running an online store on Prestashop platform.
Since Prestashop 1.7, the reference, EAN and availability are located on the product page at the bottom, in "Product details" tab. Compared to older versions, it is quite an inappropriate location. Unfortunately, it is not possible to move this data elsewhere in our templates by default, because in order to work properly including refreshing combinations (attributes), it requires also modifications of core files (outside the template).
Recently, there have been several attacks caused by a security flaw in few Prestashop modules. Here is the list:
Prestashop 1.7 doesn't have option to enter API key in administration to make Google Maps working. If you want to have Google Maps in order detail, you have to edit core file manually.
You can enable debug mode in administration. Go to Advanced Parameters -> Performance and set "Debug mode" to YES.
PHPUnit is a testing framework for PHP, used for testing during Prestashop development. It should not be distributed with modules, but in some cases it was (ZIP archives etc.). There is known vulnerability of PHPUnit that allows allows an attacker to execute PHP code on your shop, read your database and upload or modify files - install other malware etc.
PrestaShop 1.7 introduces a new Smarty helper to generate URLs. Here are some examples