Range of values returned by date("O") 1

[Stretchwickster]

Hi there,

Does anyone know the range of values returned by the following PHP call:

date("O");

I would think it should be -1200 to +1200, but I can't be certain.

If you could reference your answer that would be most helpful.

Many thanks in advance!

Clive

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"To err is human, but to really foul things up you need a computer." (Paul Ehrlich)
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[jpadie]

In principle the furthest east from Greewnwich is actually +14:00 (Kiritibati) and -12 for west of Greenwich (link)

so the php answer will depend on whether your current timezone database supports each of the edge cases. PHP says that it supports Pacific/Kiritmati (here) but it is not clear as to whether Kiritimati = Kiritibati. I can't get any leads on going the other way, short of running a script to test each supported timezone. and i can't find any neat way of automating the iteration through each time zone.

i guess you could also test by specifying the offset manually.

 

[Stretchwickster]

Thanks for those links Justin.

I've just noticed that the following range is given in the PHP Manual for "Timezone offset in seconds" i.e. a call to date("Z"):

-43200 through 50400 [seconds]

...which equates to -12:00 to +14:00


Clive

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"To err is human, but to really foul things up you need a computer." (Paul Ehrlich)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To get the best answers from this forum see: faq102-5096

 

[jpadie]

that's what I love about php. the manual is so good. miles ahead of other language resources imo.