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Posted by Alvaro G. Vicario on 09/16/06 00:00
*** Karl Groves escribió/wrote (Thu, 14 Sep 2006 19:25:15 -0500):
> I have an URL to a file I *know* for a fact exists.
>
> The url in question is pulling longblob data from the database. This has
> never been a problem for me before. Moreover, in the past, this has worked
> for other similar scripts.
>
> getimagesize works on every image file I have thrown at it, except these
> which are coming from the database.
>
> What's weird is that file(), stat(), lstat(), fopen() and so on all return
> FALSE when given the URL (and/or path, where appropriate) of this image.
>
> Even weirder: file_get_contents works fine on it.
>
> Using getimagesize() on this file does NOT return any errors. Its like the
> info is just empty.
If I understand correctly, you have a PHP script that fetches data from DB
and prints it with an image MIME type header.
If you just feed file_get_contents() with the script name, it'll read your
PHP code and it won't (obviously) find its dimensions since it's not an
image but a text file.
You should make file_get_contents() load the file through the web server so
the code gets executed:
file_get_contents('http://example.com/load_picture.php?foo=bar');
The approach, though, does not seem very optimal. You'll be retrieving the
whole pic from DB just to get its size and then discard it. Also,
load_picture.php won't be using the visitor session data or cookies.
> I've been staring at this thing for hours and I'm just drawing a complete
> blank.
I suppose you just want to generate the <img> tag. Add two columns to table
and store width and height when inserting the blob.
--
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