public function free()
    {
        unset(self::$list[$this->id]);
        if ($this->ev !== null) {
            $this->ev->free();
            $this->ev = null;
        }
    }
public function free()
    {
        unset(self::$list[$this->id]);
        if ($this->ev !== null) {
            $this->ev->free();
            $this->ev = null;
        }
    }
public function free ( ) { unset ( self :: $ list [ $ this -> id ] ) ; if ( $ this -> ev !== null ) { $ this -> ev -> free ( ) ; $ this -> ev = null ; } }
Frees the timer
@return void
Frees the timer