Added PHP hash extension as a requirement.
- PHP 5.2+. The later the better. You'll need 5.3 for encryption of key exchange conversations. On a Windows environment, 5.2+ might not work as the function dns_get_record() is only available with version 5.3.
- PHP *command line* access with register_argc_argv set to true in the
php.ini file
- - curl, gd, mysql, and openssl extensions
+ - curl, gd, mysql, hash and openssl extensions
- some form of email server or email gateway such that PHP mail() works
- mcrypt (optional; used for server-to-server message encryption)