I would simplify this line via:


```php
// If the <php_minimum> tag is not set, or if it is and the PHP_VERSION is greater than or equal to <php_minimum>
if (! isset($this->currentUpdate->php_minimum) || version_compare(PHP_VERSION, $this->currentUpdate->php_minimum, '>=')
```
This way, you're doing the `isset` check only once.