How can developers ensure that their functions return values consistently for proper evaluation using empty() and isset() in PHP?

Developers can ensure that their functions return values consistently for proper evaluation using empty() and isset() in PHP by checking if the variable is set and not empty before returning it. This helps avoid unexpected behavior or errors when evaluating the return value of a function. 

function getSomeValue() {
    $value = ''; // Initialize the variable
    // Perform some operations to get the value
    if (isset($value) && !empty($value)) {
        return $value;
    } else {
        return null; // Return null if the value is not set or empty
    }
}

Keywords

PHP functions return values empty() isset()

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