Find Who called the Method

Controller.php

$trace = debug_backtrace();
        if (isset($trace[1])) {
            // $trace[0] is ourself
            // $trace[1] is our caller
            // and so on...
            var_dump($trace[1]);

            echo "called by {$trace[1]['class']} :: {$trace[1]['function']}";

        }