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 The following requirements are recommended, and if met will provide a better experience and more full use of available features. 

1. PHP version 5.42 or later
2. PDO, pdo_mysql, curl (version 7.10.5 or later), openssl (version 0.9.6 or later), ldap gmp, mcrypt imap, gmp json, json ldap, imap libxml, mailparse, libxml mbstring, mcrypt, zlib simplexml, and simplexml zlib PHP extensions
3. MySQL version 5.0 or later
4. Apache, IIS, or LiteSpeed Web Server
5. ionCube PHP loader
6. memory_limit set to 32 MB or greater