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1. PHP version 5.4
2. PDO, pdo_mysql, curl (version 7.10.5), and openssl (version 0.9.6) PHP extensions
3. MySQL version 5.0.17
4. Apache, IIS, or LiteSpeed Web Server
5. ionCube PHP loader

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

1. PHP version 57.60 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 MariaDB version 510.0.172 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 64 128 MB or greater