I'm building a PHP application that uses data from a web service. I add an image to a desktop application which then saves it to the web. The web service provides image URLs using the .ashx file extension. If I put one of these in an <img src="file.ashx?pictureId=abc123">, it displays as an image.
I want to store these images. I know they'll generally be .jpg files and can run file_get_contents on this and save it as such. However, if one was a .png, for example, I'd still be saving it with a .jpg extension, so it's an assumption I don't wish to make.
I've had a look at the raw string of characters of the file and cannot see any identifying features to tell me that it's a .jpg, apart from perhaps the clue that it was created in Photoshop. Nowhere does it say what kind of file it was originally, either extension or original filename.
Is there a way of finding the original filetype of a file contained within .ashx URL?
The question doesn't make any sense. Maybe the .ashx script generates the image on the fly out of nothing and there is no "original".
The correct question is: how to find the type of the image retrieved from the .ashx URL?
Save the image into a (temporary) file then use getimagesize() to find its type (GIF, JPEG, PNG etc) and choose the correct termination for its final file name.
Related
my question is quite simple.
I have a Qt application with a Gui developed with QML.
My back-end side generates and saves jpg images in a folder called /images .
I am able to send from C++ to QML the strings holding the name of the images that I want to show. Sadly my QML Image object doesn't display anything.
It seems that if an image can be displayed only if it has been previously declared in the qml.qrc file.
Sadly, again, qrc files do not support wildcards yet!
https://bugreports.qt.io/browse/QTBUG-1400
Is there a workaround?
The name of the images are not fixed, they are generated with certain runtime values i.e. timestamp.
Thank you
By default it will search the image source in the qrc file. To make it go to the actual file system, prepend a file:/// to the path.
I would like to download all images in full quality from this blog: http://w899c8kcu.homepage.t-online.de/Blog.
I have access to server, but I can not find the directory where the images lie. When I use Firebug on the first picture, it shows me http://w899c8kcu.homepage.t-online.de/Blog;session=f0577255d9df9185d3abe04af0ce922d&focus=CMTOI_de_dtag_hosting_hpcreator_widget_PictureGallery_15716702&path=image.action&frame=CMTOI_de_dtag_hosting_hpcreator_widget_PictureGallery_15716702?id=34877331&width=1000&height=2000&crop=false.
How can I find the file paths like /dirname/image.jpg?
According to its HTML output the page obviously uses the CM4all content management system (CMS).
I don't know how precisely this CMS is working, though generally CMSs normally either save the files under cryptic names within a folder specified in the CMS's configuration or not in the file system at all but within a database.
Also, CMS may only save compressed or resized versions of the original files.
So, if you don't want to or are not able to dig into the server-side script code to find out if and where the images are saved, you should contact the company behind CM4all about this.
I'm wondering how it possible to extract images from .swf viewer?
Note that .swf file have not images itself.
For example I'm trying extract images from AVON catalogue from this link - http://avon.com.ua/PRSuite/eBrochure.page?index=1&cmpgnYrNr=201404&pageNo=0
Any ideas?
Best way is to put the .swf file in a decompiler for image extraction. Decompilers are smart enough to extract images for you and arrange them.
JPEXS Free Flash Decompiler is a more popular one
http://www.free-decompiler.com/flash/
You can extract other useful content from it as well.
Just download the .swf file from the website
A while back (like around 1999) I wrote a set of tools for Flash animations.
One of the tools is swf_dump which can be used to extract objects (i.e. write the objects in a form of script that sswf can nearly recompile...)
The tool also allows for extracting images that are inline (not downloaded dynamically by the flash animation, if so, anyway, you could as well download those images manually, you'd need the URL, though.)
The command line you can use is:
swf_dump -d my-animation.swf
Then your current folder will be littered with all the images that were found in the flash file. It extracts JPEGs and PNGs. The source can be compressed (SWF or CWF are supported.)
Now, you're on your own to compile that thing... The project is here and is in great need of updating (but Flash is kind of going out too...)
https://sourceforge.net/projects/sswf/
Please take a look on the website http://quotes.rapidprototype.com.au/upload/ and upload STL File and press "Start Upload" button. You shall see the image of the object within the stl file as (.png) image. I want the same functionality(The image of the of the object within the stl file, rest of the work i can do). I want to get the image in .png or .jpr or .gif format as a 2D image. I want that the user can see the image of the object within the stl file that he/she uploads. I am using PHP.
Please assist me how can I achieve this using PHP. I shall be very thank full to you.
You could use ParaView www.paraview.org in the backend. This is free and reads stl as well as having the ability to save images. There is a python interface, so you can program it to do various things (starting by tracing your actions in the GUI). You can also give it options from the command line. ParaView has a web component, but it would probably be easier just to have PHP do a system call and look for the resulting image.
Test that it works on the command line before wrapping it in PHP
In my Silverlight project, images for which the source URI does not contain the file extension don`t display, although the documentation says it should.
I set the image source like so:
imgCompanyLogo.Source = new BitmapImage(new Uri(Application.Current.Host.Source, "/Files/" + logoName));
Now, if "logoName" contains the file extension (like ".png" for example), the image is displayed fine, but it simply doesn't if the file is stored without an extension.
This seems to contradict the documentation here which states:
"The format-specific filename extensions such as .png are not necessarily required to be in the URI naming, but if the retrieved file is not determined to be a valid image format, a runtime exception is thrown."
I'm not getting any runtime exception either.
Is this a known issue or am I missing something simple?
Thanks!
PS: Just a little twist, the images display fine while debugging, not when the system is deployed...
I've made some test and the problem seems to be due to the response from the server.
If you try using .png within your project with a Build Action sets to Resource, both images will load regardless the extension.
Now if you try with images hosted on a server, it won't have the same behavior. Actually, if you try to browse the link to an image without extension directly in your browser, it will result in something else. On Chrome it will download the file, and on IE it will display the result as plain text.
That's because of the MIME type. A png should be returned with the type image\png.
There is a trick with .htaccess to set up the MIME-type but you need to have to specify for which extension. It works like this:
AddType image\png yourExtension [Extension2] [Extension3] ..
And if you want to see if why the image didn't load on your Image control, you can add an eventhandler to the ImageFailed event:
<Image Source="..." ImageFailed="Image_ImageFailed" />
But the error message that you will see is not really helpful:
ErrorException = {System.Exception: AG_E_NETWORK_ERROR}