Fatal error: Call to undefined function: mcrypt_get_iv_size

Hey all,

I need some help with this one. I installed whm program and I am getting this error.

Fatal error: Call to undefined function: mcrypt_get_iv_size() in /home/aerowebh/public_html/clients/inc/whm_functions.php on line 1372

I dont understand this one. I did a search for it but didnt come up with anything so I thought I would ask my fellow sitepointers.

Any help would be greatly appreciated

Seems like mcrypt extension is not installed. Ask your host to install it.

I am the host…lol… Any ideas how to install it?

http://www.php.net/mcrypt