Re: accessing variables within objects

Marten Lehmann wrote:

Hello, I'm using some php-classes which worked fine with php-5.0.4. Now I tried to upgrade to php-5.2.6, but the classes give a lot of errors. If I set error_reporting(E_ALL); I see messages like Notice: Undefined property: FastTemplate::$main in /whereever/inc.template.php on line 293 Notice: Undefined property: current_session::$cust_id in /whereever/inc.init.php on line 117 In inc.template.php there are a lot of calls like $this->$key. In inc.init.php there are calls like $session->cust_id.

to fix these errors, you would need to modify the code so it does something like this. where it calls $this->$key you need to check and make sure that $key exists before you trying call for it. So something like this would work. if ( isset( $this->$key ) ) { $this->$key; } else { $this->$key = null; } You didn't show any context in which you are using the above code. So I don't know what will actually work in your situation. Show a little more code that includes the method in which $this->$key is called. You will want to look at using the Overloading feature of PHP5. Check out this page for overloading examples http://us2.php.net/manual/en/language.oop5.overloading.php Take note of the __get() and __set() methods. The __get method checks to see if the key exists before it tries working with it.

What has changed in php-5.2.x so that these calls don't work any more? What is the new, required form to use objects in a similar manner (unfortunately I have no ressources to code these classes from scratch)? Thanks. Kind regards Marten

-- Jim Lucas "Some men are born to greatness, some achieve greatness, and some have greatness thrust upon them." Twelfth Night, Act II, Scene V by William Shakespeare