Re: Re: "use strict" or similar in PHP?

On Sun, 2009-03-01 at 09:57 -0500, Robert Cummings wrote: > On Sun, 2009-03-01 at 09:48 -0500, tedd wrote: > > At 9:21 AM -0500 3/1/09, Robert Cummings wrote: > > >On Sun, 2009-03-01 at 08:36 -0500, tedd wrote: > > >> The OP asked: > > >> > > >> >Is there in PHP something like "use strict" from perl? I find it > > >> >pretty > > >> >annoying to need to run script over and over again just to find out that I > > >> >made typo in variable name. > > >> > > >> And I've been waiting for an answer myself, but I haven't seen one. > > >> > > >> From what I remember, in perl if you use "use strict;" it requires to > > >> to define your variables (my) before using them. If you make a > > >> variable typo in your code, then you'll trigger an error when you try > > >> to run it. > > >> > > >> From what I've seen of php, even with using strict error reporting, > > >> you can do that all day long without generating an error. > > >> > > >> So the answer appears to be "No, you can't do that in PHP." Is > > >>that the answer? > > > > > >You can do anything you want... :) > > > > Rob: > > > > Just to show that your words of wisdom don't go unnoticed, see here: > > > > http://php1.net/oop/strict/ > > > > That's pretty slick. > > > > Now if I only understood WT* you did, I would be a better programmer for it. > > I used the magic methods __set() and __get() to facilitate error > handling. These methods fire when a property is not accessible. So when > the property does not exist these will fire. So first we init the > properties when we create an instance (I'll discuss this shortly)... to > init them we are setting them, this fires the __set() method... but > since we check the value of the private ___init property, we don't fire > an error in this instance. Future requests for the properties will not > incurr a hit to __set() or __get() as long as the property is defined. > If it is not defined then voila, the error fires and we die (we could do > anything such as fire an exception but I just die for the example). > > With respect to initialization I use func_get_args() so that an > arbitrary number of parameters can be passed to the constructor. This is > useful since we don't know the number of properties. I also check if an > argument is an array. If it is an array then I treat it as a property > with an initialized value and create and set the property accordingly. > > That's all there is to it. Oh, I didn't bother, but if someone finds this at all useful, they could use debug_backtrace() to walk the call stack and output the actual source file and line number where the illegal property was requested. Cheers, Rob. -- http://www.interjinn.com Application and Templating Framework for PHP