gif / jpeg query

[ckennerdale]

I am uploading graphics from my hardrive to an online folder via a form on an html page.

The file is being renamed in a temp folder with names such as "phpLMRO98 " and copied to my server. This is no problem-so far so good.

The file is not being named with an extension such as .gif or .jpg- regardless of the file I upload.

However if I try to view the graphic- referencing the new name without the extension- the graphic still displays.

Are their any known issues here. Personally I dont care- it it diaplys all well and good. But will I reun into trouble with browsers that require the extention to be thier.

If so how can I detect the file type and add the appropriate extension- would I use eregi?



Caspar Kennerdale
Senior Media Developer

http://www.thetuckshop.com

http://developer.thetuckshop.com

 

[sophisticate]

I'm really surprised that you're able to see the graphics without an extension. The extension is what maps the file to a particular MIME type which, in turn, invokes an appropriate handler.

Anyway, regardless of what you see, it would be a good idea to keep the extensions on the file.

Try using preg_replace to do this:

$extension = preg_replace("/[\w\d\s]+(\.\w+)$/","\\1",$file['name']);

Add special characters in the first brackets as necessary. That takes the entire filename and reduces it to the extension.

brendanc@icehouse.net

 

[ckennerdale]

I was surprised as well, which is why I posted.

I'll try this function.

Thanks Caspar Kennerdale
Senior Media Developer

http://www.thetuckshop.com

http://developer.thetuckshop.com

 

[rycamor]

Actually, most browsers now are able to determine the graphic type simply by the file contents, thus have no problem displaying the images. I have even tried renaming Jpegs to *.gif and vice versa, with no trouble. If you open gifs, jpegs, or pngs in a text editor, you will see that there is an identifier at the beginning.

Also, with PHP and Apache, you can force the content/type header on any particular file if you want to. PHP does this with the GD graphics library, so you can use <img src=&quot;somefile.php?args..etc...&quot;> for dynamically generated images.

 

[ckennerdale]

does the browser automatically display other files in this manner such as .pdf, .txt nad.doc in this fashion (obviously not with the gd library) Caspar Kennerdale
Senior Media Developer

http://www.thetuckshop.com

http://developer.thetuckshop.com

 

[Karl Blessing]

how is it that you are able to upload graphics to the server ( I am curious because I am trying to create a Review publishing interface, that automatically stores reviews into a MySQL Database, that part I managed, but I want to be able to upload graphic files as well so that they can include images into the reviews shown ) Karl Blessing aka kb244{fastHACK}