In what scenarios is it recommended to use negated negation for boolean constants in PHP code, and how does it contribute to code clarity and error prevention?

Using negated negation for boolean constants in PHP code can help improve code clarity and prevent errors when dealing with boolean values. By explicitly negating a boolean constant, such as `true` or `false`, it makes the code more readable and reduces the likelihood of mistakenly assigning the wrong value. This practice can also help avoid confusion when comparing boolean values in conditional statements.

// Incorrect way of assigning a boolean value
$isAdmin = false;

// Correct way of assigning a boolean value with negated negation
$isAdmin = !false;