using PreCalculateCartTotals displays "gumph" on screen

[BigLebowski]

hi there

 

I added this hook recently. It works with "ClientAdd" but as soon as I change it to "PreCalculateCartTotals" I get the following "gumph" on the client ordering screen:

 

???????���������????������????

 

Any ideas? The hook is here:

 

<?php

/* ******************************************************

** Example Hook Function **

 

Please refer to http://wiki.whmcs.com/Hooks for more info

 

function fred($vars) {

 

$firstname = $vars['firstname'];

$lastname = $vars['lastname'];

$email = $vars['email'];

 

# Run code to create remote forum account here...

 

}

 

add_hook("PreCalculateCartTotals",1,"fred");

 

****************************************************** */

?>

 

Ta

Dude

[laszlof]

Are you sure that "firstname" and "lastname" are valid variables for that action hook? I would do a print_r($vars) to make sure.