date_sun_info restore ability to supply custom zenith value

[Alvamiga]

Description

The old functions (date_sunrise and date_sunset, now marked as deprecated) had the option to use a custom zenith. The ability has been lost in the replacement date_sun_info function, only supporting a few, standard, fixed values.

While the supplied standards are useful, it stills has purpose to be able to set a custom value for the zenith, as before.

Could this be added as an optional parameter and return an additional pair of keys in the returned array?

[derickr]

It is probably not hard to add this, for this, an optional argument needs to be added to:
https://github.com/php/php-src/blob/master/ext/date/php_date.c#L5473

And if it is given, an additional set of entries can be added below the section for astronomical twilight:
https://github.com/php/php-src/blob/master/ext/date/php_date.c#L5565

Care needs to be taken to convert zenit angle, to horizon angle, and a proper name for the elements needs to be picked.

[userpointfi]

Strong support for this. I need to use many angles, not only the standard ones. I have been looking for an alternative solution before date_sunrise is removed, but so far without success. Of course, the best would be to use date_sun_info with a custom zenith angle.

Also support this as current times are not accurate compared to US military calculations because of different zenith used.

[nck64]

Is this ever going to be looked at, if not I would suggest it should be closed!