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Posted by Mark on 11/25/06 02:40
Pedro Graca wrote:
> Mark wrote:
> > So, I've got some PHP code that reads in a file and parses some data as
> > it goes along.
> > However, now I'm thinking it might be easier for me to store chunks of
> > the file in the database rather than all the bits of data, so that it
> > can be interpreted in different ways if need be. But the problem is,
> > now I can't just use fread to read in two bytes of data, because I've
> > already got the whole chunk stored in a variable. And I really don't
> > want to deal with tons of substrings, it would be much easier to have a
> > sort of file pointer. So is there any way, or any set of functions
> > that I can use to deal with this?
>
> Index into the whole chunk?
>
> $two_chars = substr($whole_chunk, 17655, 2);
> switch ($two_chars) {
> case 'C3': $three_chars = substr($whole_chunk, 17657, 3);
> break;
> case '--': $three_chars = '---';
> break;
> default: $three_chars = substr($whole_chunk, 17655, 3);
> break;
> }
>
> --
> I (almost) never check the dodgeit address.
> If you *really* need to mail me, use the address in the Reply-To
> header with a message in *plain* *text* *without* *attachments*.
Err.. I think the best solution would be for me to make some sort of
wrapper class. Which deals with all the substr-ing and returns
whatever I ask for... so I can set up a function like
sseek($my_string_chunk_object,2); // string seek
which returns 2 (or however many) characters from the string and
advances the internal pointer.. (which would probably just an integer
to be used in the substr function)
then I could set up wrappers for how the data should be interpreted too
while I'm at it...
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