Change Directory

mobrien99

I am trying to display a dynamically changing html file in a sub directory off $DOCUMENT_ROOT. The html file references a number of images (.png files) in the sub directory. While I can change directory with a chdir call and locate and display the html file with a readfile call, the .png files, which are called with a img src= tag in the subdirectrory don't display. I have tried a number of things including setting the include path and including the html file as well as ini_setting the document root.
Any ideas?

archangel_617b

Can you elaborate you directory structure a bit? Offhand, I would suggest you simplify your site's layout, but I haven't a clue what you are trying to achieve.

I usualy have all my images in a subdirectory called "images" so I only ever have to use src=images/sinkyellow.gif which is relative to the root of that document tree. (As opposed to /images/sinkyellow.gif which is relative to the document root)

Anyhow, hope I've either added clarity for you or you will post back with some more details.

mobrien99

The subdirectory is below the htdocs directory. I am reading an html file from that subdirectory that is re-created every 5 minutes thus I have no control over the path of the img src = path for the included .png files in the html file. As i mentioned, I can change the directory to the html file or encode the subdirectory name in the readfile function but in either case, it appears that the .png image files are never read when the readfile of the .html file occurs.

archangel_617b

Ah, okay. Let me try this then: The problem is that you know the path on your local file system (eg /home/html/folder/image.png in 'nix or c:\htdocs\folder\image.png in windoze), but you need only the path relative to the document.

Just for clarity, the web-browser is not aware of the file system path so when you specify www.mysite.com/folder/image.png , the /folder/image.png is the part that is relative to the document root no matter where the document root lies. If you are specifying the img src=, then you need to strip the document root and send only the relative part.

Here's how I might try it with [man]ereg_replace/man (you will have to test it though):

$image = getImagePath();  // so you might have /home/html/folder/image.png
$image = ereg_replace($DOCUMENT_ROOT, '', $image);

print('<img src='.$image.' />');  // should display something like /folder/image.png

Sorry if my message is a little scattered or I'm totaly off base. It's early for me and I'm short on caffeine 😛

mobrien99

archangel_617b:

Thanks for your help but i'm not explaining the basic problem so I'll try again:
1) I need to display an html file which lives in a subdirectory below htdocs.
2) This html file is recreated dynamically every 5 minutes so I CAN'T modify its contents before displaying it (without a lot of work).
3) Within this html file are some image files (.png files that are displayed with a img src ="filename.png"). There is no path component to this image file. It exists in the same subdirectory as the html file.
4) I can locate and display the html file with a number of different techniques but in all cases, the .png files don't display as it appears that they aren't found. Even though I change the working directory to the subdirectory with a php call, the reading of the image files from the html file must utilize some other pathing arrangement.
5) Since I can't modify the html file, how can I get the html and its embedded image files to display?

archangel_617b

I think you were explaining the problem correctly, I just wasn't believing you...

Er, so there's an html file with a bunch of images in it. You cannot mess with the file because it get recreated frequently. It cannot find the desired images.

Well, whatever is replacing that html file will have to be fixed then.

If you just want to display it somewhere else, can you copy it to a new file and use that instead? There's a million ways of doing that... But that's not what you want to do.

Can you check (manually) what images that file is looking for and move the actual images there?

I don't know if I can actually help you, but if you have a URL to this mythical page, I can take a look and maybe get some inspiration....