Re: empty list removed

Hi! On 05.07.2021 at 08:48, Karoly Negyesi wrote: > 3ae0b14dd0 removed the list of empty things. > > The documentation now says "A variable is considered empty if it does not > exist or if its value equals false." Great, and which values do that? > > The commit message says: "To avoid duplication, we refer to falsey values > instead." > > If this is a duplicate, we need to link to the list where it exists. If it > is only a duplicate of scattered information all around and the list > doesn't exist anywhere, this commit needs to be reverted and "SimpleXML > objects from empty tags" added to the list. I would vastly prefer this one > but I am not here to start an edit war. Let's discuss first :) The documentation (<https://www.php.net/empty>) states: | Returns false if var exists and has a non-empty, non-zero value, aka | falsey, see conversion to boolean. Otherwise returns true. "Conversion to boolean" links to <https://www.php.net/manual/en/language.types.boolean.php#language.types.boolean.casting>, and there is a list of values which are consired falsey, including SimpleXMLElements. Are we looking at different PHP manuals? > Also, if those objects are worth a special case then > https://www.php.net/manual/en/types.comparisons.php needs to be > fixed too. > And yes you can -- kind of -- glean the list of empty things from this page > but it's a big mental effort. Might be worth to add SimpleXMLElements there; OTOH, *any* internal object could behave special in this regard. Christoph