I'd break this up a bit; instead of waiting until the end to return a value, return directly from within your conditionals:

```php
if (self::OP_AND === $this->operator) {
    if ($this->strict) {
        return (bool) (($this->control & $value) == $value);
    }
    return (bool) ($this->control & $value);
}

if (self::OP_XOR === $this->operator) {
    return (bool) (($this->control ^ $value) === ($this->control | $value));
}

return false;
```

Note also the use of `(bool)` instead of `(boolean)`; do that for consistency with the rest of the framework.