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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 5.6 or later
2. PDO, pdo_mysql, curl (version 7.10.5 or later), openssl (version 0.9.6 or later), gmp, imap, json, ldap, libxml, mailparse, iconv, mbstring, mcrypt, simplexml, and zlib PHP extensions
3. MySQL version 5.0.17 or later with max_allowed_packets = 128M or higher, and wait_timeout = 3600
4. Apache, IIS, or LiteSpeed Web Server
5. ionCube PHP loader
6. memory_limit set to 64 MB or greater