[PHP-DEV] PHP 4.0 Bug #6884 Updated: problem getting a double variable from binary file From: derick <email protected>
Date: 10/25/00

ID: 6884
Updated by: derick
Reported By: heinrich <email protected>
Status: Feedback
Bug Type: Variables related
Assigned To:
Comments:

User reported:

I found the error - was my mistake. Sorry!

(In fact it WAS a wrong offset but Delphi autocorrected this mistake of mine
so I thought the settings were correct)

tnx anyway - bye!

Greets - Max.

Previous Comments:
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[2000-10-18 06:37:37] stas <email protected>
Failed to reproduce the behaviour. Could you please provide a binary string that is decoded incorrectly by unpack?
Also, note that unpack has different syntax than in perl (see the manual) so doesn't do what you want, you should do $price=unpack("dvar",...) and use $price["var"] then.

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[2000-09-26 02:40:06] heinrich <email protected>
Hi!

Probably this isn't a true bug, bit I couldn't find ANY
one (tried Newsgroups/IRC/Doc's..) who could explain this
to me:

I'm reading a price list from a file in which there are
(beyond other stuff) Product name and price saved.
Extracting the Product name is no problem but the price
is saved as a 8byte-double variable. So I used:
$price=unpack("d",substr($contents,211,8));
But this results in absolutely strange values like
8.3...+E-311 and so on. My file is valid since I've also
programmed this using Borland Delphi. There I use
the command "move" to move the part of the memory where
the file buffer is saved directly to the address of a
double variable. There it works quite fine. So - what's
wrong? (Although I'm KNOW that it's an 8byte double I
tried with any other decoding method from unpack like float,
single and so on... Nothing worked..

Please contact me If you know anything about that, it's
quite important for me :-}

Tnx a lot! - bye!

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Full Bug description available at: http://bugs.php.net/?id=6884 

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