function reset() {
        foreach ($this->vars as $key=>$val) {
            unset($this->env[$key]);
        }
        $this->vars = array();
    }
function reset() {
        foreach ($this->vars as $key=>$val) {
            unset($this->env[$key]);
        }
        $this->vars = array();
    }
function reset ( ) { foreach ( $ this -> vars as $ key => $ val ) { unset ( $ this -> env [ $ key ] ) ; } $ this -> vars = array ( ) ; }
Resets evaluator's variables
Resets evaluator s variables