Here's the PHP doc page. Let us know if you have more questions: http://us3.php.net/manual/en/language.oop5.overloading.php Thank you, Micah Gersten onShore Networks Internal Developer http://www.onshore.com Philip Thompson wrote: > On Jul 30, 2008, at 1:29 PM, Jim Lucas wrote: > >> 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. > > Ok, I'm trying to understand the point to using these overloading > methods. > > <?php > $obj = new ClassThatUsesOverloading (); > $obj->hi = 'Hi'; > $obj->bye = 'Bye'; > > echo $obj->hi, ' ', $obj->bye; > // Output: Hi Bye > ?> > > You could have done that or you could do the following..... > > <?php > $obj = new ClassThatDoesntUseOverloading (); > $obj->setHi('Hello'); > $obj->setBye('Bye Bye!'); > > echo $obj->hi(), ' ', $obj->bye(); > // Output: Hello Bye Bye! > ?> > > The 2nd way seems more *OOP* than the first - weird to explain. I > guess what I'm wanting to know is.... why would you use overloading > (in PHP)? The only reason I can think of is to avoid having to > create/use accessors. Please help me understand! But please be nice! =D > > Thanks, > ~Philip > > >>> 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 > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
