Posted by M. Sokolewicz on 03/03/05 22:37

Richard Lynch wrote:

> Tom Cannaerts wrote:
>
>>I'm processing a binary file, and in that file there is a 64bit FILETIME
>>value. This value represents the number of 100-nanoseconds since 1/1/1601.
>>
>>I would like to convert it to a somewhat more usable value, since I
>>eventually will need to display that value as a human readable date.
>
>
> In addition to the BC_MATH package, there's some new-fangled extension to
> PHP that does the same kind of stuff.
>
> I'm not quite sure how you are going to get the 32 bytes into a string
> suitable for sending *TO* either of those packages, however...
>
> I'm guessing you'll have to read 32 bits, throw that into BC_MATH,
> multiply by 0xFFFFFFFF, grab the next 32 bits, and add that in BC_MATH...
>
> Then, you'll have to divide by 100-nanoseconds and/or subtract enough
> seconds to get to whatever time format you want to use.
>
or, since you won't be showing it in such precision, you could cut off a
whole bunch from the end, and simply divide by a factor
10^numbers_you_let_off less :)

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