PHP 8.4: Document type widening of mode param of round()

[Girgias]

@haszi not sure if I should use a <constant> tag here for linking, but <enumidentifier> is not allowed... I could use <code>, however.

[haszi]

@haszi not sure if I should use a <constant> tag here for linking, but <enumidentifier> is not allowed... I could use <code>, however.

Semantically, <constant> seems to be much closer to what we want here.

PHP isn't the only language to allow enums as default values so the <enumidentifier> not being allowed seems like an oversight in the DocBook spec. :-)

[haszi]

<constant> won't link to an enum. I'm not sure how to handle the linking though.

[Girgias]

<constant> won't link to an enum. I'm not sure how to handle the linking though.

I suppose one could add a role attribute to the constant tag, e.g. <constant role="enum"> to link enum cases?