VirtueShop has the following System Requirements:
You must ensure that you have MySQL, XML and Zlib-Support built into your PHP.
PHP should be compiled with support for https (openSSL) and cURL
PHP Safe Mode should be turned Off.
PHP Safe Mode feature has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0
- In PHP configuration set memory_limit to 64M or higher and upload_max_filesize to 4M or higher
- SSL certificate for secure payment processing