Re: Re: poll: howto do informative error handling without the fatalities

On Tue, Feb 09, 2010 at 11:38:42PM +0100, Rene Veerman wrote: > Well, i've thought of a few ways to allow localized overriding of > values returned by functions in case of an error. > > I have yet to figure out what the exact advantages are of this > code-standard, but the overhead seems acceptable and i recon this, > when done, will beat the "trigger_error()-try-catch" paradigm. > I'd like to hear your comments. > > // imo unsafe & prone to fatalities: > $r = funcA ( funcB ( funcC ($p) ), funcD ($q) ); I wasn't going to comment, but seriously, Rene, I would not make it a habit of calling functions within the parameters of other functions. Among other things, it obviously creates a whole host of the problems you're talking about, and it makes your code hard to debug and read. The only way I'd normally do something like this is if I were using native PHP functions and the possible failure of the functions wouldn't matter. Rather, I'd do something like this: $d = funcD($q); // tests if necessary $c = funcC($p); // tests if necessary $b = funcB($c); // tests if necessary $r = funcA($b, $d); Paul -- Paul M. Foster