Re: caller function?

Zeev Suraski wrote: > > At 04:01 14/12/2000, Tom Fishwick wrote: > >Hi! > > > >Anyone here working on a caller() function? I spent a couple hours last > >night looking through the zend code, and I think may be able to do it, > >but if someone more experianced is working on it then I'll leave it > >alone. If no one is working on it, could someone give me a hint or two > >on where to start, or how it would be implemented _correctly_? > > What's the caller() function supposed to do? If it's displaying the > calling function name, there's no way of doing this now without slowing > down execution time for all function calls. something like list($function, $filename, $line) = caller(); is what I meant (so you assumed right). For me, personally, I'm not worried if the script is a little slower, if it saves me some debugging time or allow me to pinpoint an error from a log entry then it's well worth it. I took a couple hours put in a caller function to zend, it works, but I'll admit I haven't tested it too much yet, one thing it doesn't do is prepend the class name to a method... > > >Also, any thoughts on some type checking syntax? ie. > > We're not getting into this now. It's a major concept change and should be > discussed (I'm generally against it, definitely when talking about > primitive types - perhaps with the future OO support). I agree with the primitive types, I was thinking more about the objects though. I think the type casting syntax works well for this. The past week I've been debugging a system written in php and _many_ of the bugs have been becaause the wrong object type has been been passed to a method. I either need to add code to check the object type for each method or have some other kind of type checking, I think that this: function blah((Person)$person) { } looks much better than: function blah($person) { if(get_class($person) != 'Person') trigger_error(E_USER_ERROR, '$person must be a Person object'); } the more I can separate logic code and the error checking code the better, which is my main reason for wanting a caller() and type checking operator. > > Zeev > > -- > Zeev Suraski <zeev@zend.com> > CTO, Zend Technologies Ltd. http://www.zend.com/ > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, e-mail: php-dev-unsubscribe@lists.php.net > For additional commands, e-mail: php-dev-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net