What can we say about the following code?

Question

Which statements are true about the following code ?
```
/**
* @param    string||int    $mixedVar
* @return    int
*/ 
function someMethod($mixedVar): int
{
    return $mixedVar + 99;
}
```

Accepted Answer

If `$mixedVar` is not numerical or can't be cast to a number then we will either get a warning (PHP 7) 99 or a TypeError (PHP 8)

Accepted Answer

As long as `$mixedVar` is numerical or can be cast to a number an integer will be returned

Answer

If `$mixedVar` is of type type `string` then it will always be cast to its numerical value or if no numerical characters it will default to 1. The function will always return a minimum of 100 (1+99)

Answer

The parameter `$mixedVar` will never be taken into account and the function will always return 99

Question from the PHP - Fundamentals test

What can we say about the following code?