[eluser]bigtony[/eluser]
Yes, you would nearly always use plugins in a controller, like this:
Code:
$this->load->plugin('calculator');
$sum = add(2, 3);
The above assumes a plugin in your 'plugins' directory called 'calculator_pi.php' containing something like this:
Code:
function add($num1, $num2) {
return $num1 + $num2;
}