El sáb., 30 de julio de 2022 16:48, David Gebler <davidgeb...@gmail.com> escribió:
> > > On Sat, Jul 30, 2022 at 3:01 PM Nikita Popov <nikita....@gmail.com> wrote: > >> On Fri, Jul 29, 2022 at 4:27 PM juan carlos morales < >> dev.juan.mora...@gmail.com> wrote: >> >> > I am following the RFC guideline for the first time. ( >> > https://wiki.php.net/rfc/howto) >> > >> > As suggested there, I am here to get a feeling from you, regarding the >> > following RFC for PHP. >> > >> > # Change (draft): >> > >> > New function in php called like: >> > >> > is_json(string $string): bool >> > >> > ## Description >> > ### Parameters >> > string $string -> string to find out if is a valid JSON or not >> > >> > ### Return >> > Returns a bool. The function is capable to determine if the passed >> string >> > is a valid JSON (true) or not (false). >> > >> > # Why this function ? >> > >> > At the moment the only way to determine if a JSON-string is valid we >> have >> > to execute the json_decode() function. >> > >> > The drawback about this, is that json_decode() generates an in memory an >> > object/array (depending on parameters) while parsing the string; this >> leads >> > to a memory usage that is not needed (because we use memory for creating >> > the object/array) and also can cause an error for reaching the >> memory-limit >> > of the php process. >> > > In the last 15 years, the only time I've ever needed to know if a string > is valid JSON is if I'm about to decode or otherwise parse it as JSON. If > I'm decoding what I expect to be a large JSON blob, such that memory usage > might be a concern, personally I use > https://github.com/salsify/jsonstreamingparser but the point is userland > solutions are possible. > > What I'm asking is what's the practical use for this proposed function? > Where are you likely to need to know if a string is valid JSON but not have > to (try to, with error handling) parse it almost immediately afterwards > anyway? Unless there is some fairly commonplace use case for this I'm not > thinking of, you're going to be using that extra memory, or using a > streaming parser, at some point in your script regardless. If there is > genuine demand for it, I'd be in favour (I'm not a voting member so kind of > moot but...), otherwise I'm generally against introducing new core > functions which are either edge-case or can be perfectly well dealt with > via userland code. > > Cheers > > -Dave > > >> > >> > Sometimes we just need to know is the string is a valid json or not, and >> > nothing else. >> > >> > # Do we need something like this? If a check to an string is valid JSON >> > then for sure I will have to use it in my code either as an object or an >> > array. >> > >> > Well that is not true. There are plenty of cases where you just need to >> > check if a string is a valid json and that is it. Just looking into >> > stackoverflow will give you an idea about how many people is looking for >> > something like this in an efficient way. >> > >> >> Could you please give some specific examples where the proposed >> functionality would be useful? >> >> Regards, >> Nikita >> > Thanks everybody for the feedback. I think I got to a point that I need to write another e-mail with all my arguments and use cases for this. That is why I kindly ask you all for patience, and I Will write again soon. It will be a long e-mail for sure, and when It comes , I ask you all to take the time to read it. Thanks in advance. >
