Code Inspection: Expression is always 'null'

Reports the variables in return statements that are always null.

In the following example, the $var variable returned from within the conditional statement is always null. After the quick-fix is applied, the variable is replaced with the explicit null value.

function getValue($var) {
    if ($var === null) {
        return $var;
    }
    return $var;
}

function getValue($var) {
    if ($var === null) {
        return null;
    }
    return $var;
}