undefined function: mcrypt_create_iv()

[jwoods7]

I have a script that was given to me for research...but it's giving me this error:

Fatal error: Call to undefined function: mcrypt_create_iv()

From my research on the net, this is a built-in function ??? yes no?

This creates an initialization vector to deal with encrypting cookies....I BELIEVE

Does anyone know why this would show up? Sounds to me like it doesn't see the function because the user hasn't created it...but the user shouldn't have to if it's a built-in function???

thanks in advance for help/advice

 

[DRJ478]

The PHP documentation says:

You need to compile PHP with the --with-mcrypt[=DIR] parameter to enable this extension.

Check the running installation with phpinfo() or one of the ini parsing scripts in the FAQ section.

On Windows you need the compiled mcrypt binaries.

http://ca2.php.net/manual/en/ref.mcrypt.php