getimagesize() not working

[Karl Groves]

I am working on a personal project and having trouble with getimagesize()

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_conten ts works fine on it.

Using getimagesize() on this file does NOT return any errors. Its like the
info is just empty.

I've been staring at this thing for hours and I'm just drawing a complete
blank.

Got any ideas?



--
Karl Groves

https://www.karlcore.com

[Alvaro G. Vicario]

Re: getimagesize() not working

*** 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_conten ts 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_conten ts() 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_conten ts() load the file through the web server so
the code gets executed:

file_get_conten ts('http://example.com/load_picture.ph p?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.ph p 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 <imgtag. Add two columns to table
and store width and height when inserting the blob.


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