Can't use method return value in write context

Question

I would think the following piece of code should work, but it doesn\'t (Edited: Now works in PHP 5.5+):

if (!empty($r->getError()))
         


        

Answer 1

The issue is this, you want to know if the error is not empty.

public function getError() {
    return $this->error;
}

Adding a method isErrorSet() will solve the problem.

public function isErrorSet() {
    if (isset($this->error) && !empty($this->error)) {
        return true;
    } else {
        return false;
    }
}

Now this will work fine with this code with no notice.

if (!($x->isErrorSet())) {
    echo $x->getError();
}