When dealing with functions that can return non-boolean values like 0 or "", why is it recommended to use the !== operator for comparison in PHP?

When dealing with functions that can return non-boolean values like 0 or "", using the !== operator for comparison in PHP is recommended because it not only compares the values but also checks for the data type. This ensures that the comparison is strict and accurate, preventing unexpected behavior or errors that can occur with loose comparisons using == or != operators.

// Example code snippet using the !== operator for comparison
$result = someFunction();

if ($result !== false) {
    // Code to handle the case where the result is not false
} else {
    // Code to handle the case where the result is false
}