Re: Proposal: deprecate undefined passed arguments

Hi, 2015-02-23 17:41 GMT-03:00 Marc Bennewitz <dev@mabe.berlin>: > Hi Marcio > > Wow, nice to see this - didn't noted it before. > > But I have to questions/notes: > 1. Why you throw only a warning and not an error (deprecating this feature > first). I don't see the benefit. > Because https://github.com/search?l=php&q=func_get_args&type=Code&utf8=%E2%9C%93 brings 2,031,405 results. All packages made to support PHP 5.5 and below will break. Remember PHP only got variadic functions on v5.6. E_WARNING vs E_DEPRECATED is a debatable topic though. E_DEPRECATED means func_get_args() will be removed some day, while E_WARNING means func_get_args() will not be removed and will stay as an option to explicit variadic fucntions. That's a legit topic to throw on discussion phase IMMO (though we probably already know the result...) 2. As I understand it correctly passing unknown arguments will be allowed > if the function uses one of the func_[get|num]_arg[s]() functions. > > This looks wired to me as the caller should not know the body to know how > a function can be called > and because of the dynamic nature of PHP this check isn't possible in all > cases as you already noted. > Yes, hence why I'm proposing to block dynamic calls to *func_get_args() func_num_arg()* API, see https://wiki.php.net/rfc/strict_argcount#open_issues > > Additionally such strict check is for detecting wrong calls but this > detection doesn't work with code like this: > ûýÉ!ûùú ÉryÞ > Сhttps://github.com/zendframework/zf2/blob/master/library/Zend/Cache/Storage/Adapter/Memcached.php#L213 > That's a great point! Maybe *func_num_args()* detection shouldn't mark the function as sensitive to dynamic argcount. I only added it for "completeness", but now I see that maybe it was an unnecessary implementation detail. > > In my opinion functions using func_[get|num]_arg[s]() to implement > variadic arguments are totally outdated and should be refactored using new > semantic. I also think such code isn't used very often and deprecating it + > removing later on (PHP 8) will give more than enough time to update it as > it's simple to find and simple to fix. > > Also to previous example given for ZF2 shows that the function > func_num_args() have it's rights to exit but i'm unsure about > func_get_arg[s](). > > Marc > I agree with you here, but honestly, deprecating *func_get_args()* is not a passable option because people currently still have to support PHP 5.5 and it has no variadic functions. I had this same idea, originally, but then reality bitten and I decided to do the compile time check for the variable-lengh argument list API usage. Márcio Almada.