Dynamic Image Problem

matthias382

I'm running on Win XP with IIS 5 and PHP 4.2.3. I'm pulling data from a MySQL database to generate a dynamic image, and the data seems to be coming through just fine. I've opened the original image in IE 6.0.26, so I know that it's something that I should be able to pull out of a database and display again. I really don't think it's a database issue. I'm outputting the Content-type header for the image (I've tried both jpegs and gifs) and the data for the image, but when I try to access the PHP file that I use for the image source (img src), I just get a broken image icon. This file is outputting nothing except the image header and data, so I don't think anything's corrupting it at run-time when the data is outputted. Anybody have any ideas on what the problem might be?

[deleted]

Most likely one of the functions you are using to manipulate the image is throwing up some warnings. Try commenting the header line and seeing if you can see any warnings....

matthias382

Strange... when I remark out the header line, IE still prints a broken image graphic. Though I did find something else interesting: when I read the length of the data string, and compared it to the size that was stored in the database for that file, the one I read in was about half of the original. I'm guessing something strange is happening in the file upload process when I read the file. What I'm doing is this: on the screen that follows the upload form, I'm getting the temporary name assigned to the file from PHP and I'm reading in the contents via the file command, then imploding the resulting array to form a string. Is it possible that I'm somehow losing data somewhere in the process?