I'm trying to determine which of the following (the fallback or the src link) actually gets rendered to the screen:
<img fallback="http://link1.gif" src="http://link2.gif">
I need a way of figuring out which of the images I would actually see on my screen (using PHP).
Note: This is the first time I've seen the fallback attribute and this is part of someone else's code (I've replaced the actual links for security reasons).
Rahter then using fallback you should use onerror.
<img src="http://link1.gif"
onerror='this.onerror = null; this.src="http://link2.gif"' />
This works also great crossbrowser.
Hope it helps.
Update the onerror to
http://domain.com/track.php=failed_image_on_screen=link1.gif
The browser then should make a http request to the php script so you can catch and log
Related
Ok so there are tons of examples on how to pass custom parameters hidden fields in Wufoo forms (in my case the current URL of the form). The problem is these all deal with the javascript embed code. I'm working with a company whos custom backend won't allow the js embed and therefore I must use the iframe embed method. I cannot for the life of me figure out how to do this. There are a couple frustratingly close examples that mention using PHP successfully but never show the actual implementation. Can anyone tell me how to do this or point me in the right direction? Relevant info:
I currenlty have a field that is hidden using css. I want that field to be populated with the url or some part of the url it could be www.host.com/thepage or just /thepage as long as we can see where on the site the user submitted the form
http://help.wufoo.com/articles/en_US/SurveyMonkeyArticleType/URL-Modifications <- the page every post I've read mentions. http://www.wufoo.com/forums/discussion/3349/how-to-pass-dynamic-value-into-embedded-forms/p1 <- example using php but with javascript embed methodExample iframe embed code:<iframe height="763" allowTransparency="true" frameborder="0" scrolling="no" style="width:100%;border:none" src="https://username.wufoo.com/embed/formid/">Fill out my Wufoo form!</iframe>
It seems the appropriate way is to use the URL method.
Adding "def/" at the end of your src, then any arguments you wish to pass.
For example, if I wanted to disable secure SSL, I'd use:
<iframe height="763" allowTransparency="true" frameborder="0"
scrolling="no" style="width:100%;border:none"
src="http://username.wufoo.com/embed/formid/def/secure=false">
...
Additional parameters can be added using the '&' character.
(note that I also changed https for http)
In fact, if you already have a javascript example of what you want, the only thing javascript does is add this iframe for you, so if you can run it in your browser (by making a local HTML file, for example) using Inspect Element and navigating to the created iframe element, you can copy and paste the resulting code to your site, tweaking as desired.
Regarding PHP, all they mean is to construct the URL using things like echo or print. For example:
<iframe height="763" allowTransparency="true" frameborder="0"
scrolling="no" style="width:100%;border:none"
src="https://username.wufoo.com/embed/formid/def/fieldx=<?php echo $the_url; ?>">
I'm having trouble figuring out if it's possible to embed an html or js document as an image, like so:
<img src="http://blah.com/image.js" />
or
<img src="http://blah.com/image.html" />
The general idea being that when the browser tries to access the file, it would execute the file clientside and get the actual image, and would then embed it as usual. I realize this can be done easily with PHP, but I'm looking for a non-server solution.
Problems being the content type it transfers as is wrong, and more importantly I think this violates every crossdomain and sandbox rule, to which I don't think there's any way around.
As long as the document you are linking to can display the binary data this will work.
Follow this article to solve the binary load with javascript, http://emilsblog.lerch.org/2009/07/javascript-hacks-using-xhr-to-load.html
Then you can also include base64 data in img tags like this
<img src="data:image/png;base64,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" />
The src attribute must point to a URI that eventually results in actual image data. Perhaps you should consider leaving it blank and then creating a script that generates a data: URI and replaces it into the attribute.
I am using curl to get the images from html source code of an external webpage. I am getting img original='imageurl' on view page source in Firefox. But when i select the particular images then it shows img src='imageurl' on view selection source in in Firefox.
How can I get this type of image using curl?
Currently I am using regex to get the image:
preg_match_all('/<img[^>]+>/i',$output, $result);
print_r($result);
But it doesn't display any image.
I am very confused about what to do here. Anyone have any thoughts?
I am very confused about what to do here.
The confusion probably results from that you use your webbrowser to view the source of an URL. Even if it's often the case that the source of the page displayed by the webbrowser is the data that curl would return as well, this is not always the case.
Especially the Firefox feature view selection source will not display that selection from the original resource, but often something else. To prevent that, you need to disable javascript in your Firefox browserÂDocs. Because often documents are modified with javascript and you want to see the original, not the modification because curl is not able to run javascript, it can only get "the original".
Anyone have any thoughts?
Disable javascript in your browser.
Reload the page.
Locate the fragment of the HTML-source-code you're interested in.
Write it down, e.g. into a string.
Request the page with CURL. Output the source.
Locate that string in there. If it's not in there, search the curl request result for the string you're interested and use that instead.
Write a regular expression that is able to obtain what you need from that string.
Use that regular expression in your program then.
Your web browser is reformatting the HTML according to how it understands/parses the HTML page.
When you choose "View Page Source" it shows you the original source code served from the server.
When you select content and choose "View Selection Source" it shows what the browser has parsed into DOM (what the browser understands) for the selected content.
I am guessing you're using Firefox
If you are attempting to use cURL to process the HTML served from the server, you must not look at "View Selection Source" of the page, always refer to "View Page Source"..
Ultimately
You should rather refer to the ACTUAL result from cURL
For example:
$content = curl_exec($ch);
header("Content-type: text/plain");
echo $content;
That should echo exactly what cURL has received from the server...
NOTE: This is a re-post of https://stackoverflow.com/questions/8754844/can-not-get-images-using-curl
Furthermore
If you want to fetch the actual image inside a <img src=""> tag then you need to pin-point the IMG tag in the result HTML response using preg_match, and do a seperate cURL request to the IMG SRC
I am trying to do the following; dynamically pick a server with the image on it, and then show said image in img src="". Yeah I know, I am horrible at explaining stuff like this but this should clear it up:
dl-main.php (on server0.domain.com)
$url = 'http://server2.domain.com/offerimage.php?f='.$_GET["f"];
header( 'Location: '.$url ) ;
offerimage.php (on server2.domain.com)
//Lots of link-protection stuff here
$f = "/".$_GET["f"];
$url = 'http://server2.domain.com'.$uri_prefix.$m.'/'.$t_hex.$f;
echo' <img src="'.$url.'"></img> ';
dl.php (on many other servers)
img src="http://server0.domain.com/dl-main.php?f=lalala.gif"
So it pretty much goes like this: Random person adds img src directing to dl-main.php?f=filename on server0. server0 then decides which server will provide the image. In the above example I am using only one server; server2
Now I simply want dl.php to show the photo hosted on server2.domain.com .
As it stands when I directly visit dl-main.php it succesfully redirects me to dl.php, which then succesfully shows me the image I requested. But when I use dl-main.php in a img src it doesn't show the image. I didn't expect it to work but it was worth a shot, but now I don't know what to do anymore :o
I hope this failed attempt is a good example of what I'm trying to accomplish here.
Thanks!
Here's the problem. You call image from server0 using:
<img src="http://server0.whatever/dl-main.php?f=thatimage.something" />
Where the dl-main.php code redirects to server2. Here, you do:
echo' <img src="'.$url.'"></img> ';
So basically the original img tag would get another img tag instead of the image data. That's why the browser can't render the image. You should echo the content of the image instead of an img tag.
Try using your browser's developer tools and check the request to server2 to verify my guess.
It can't work, your second script (offerimage) is producing text/plain, you should produce image/...in order to use img
I know that I can output an image using GD by using
<img src='draw.php'>
Where draw.php is a file containing the code to create an image. How can I instead output the image via a function call (I am using the Zend Framework so will be using a View Helper) rather than simply pointing to a .php file in an img tag as above?
Any help greatly appreciated.
you can't.
at least not in a useable way - you could encode the image with base64:
<img src="data:image/png;base64,iVBORw0KGgoAAAANS..." alt=""/>
i don't have any idea which browsers support this, though ... quick test:
firefox: ok
chrome: ok
opera: ok
ie6: fail
ie7: fail
safari: fail
ok, forget it.
but, you're probably trying to do something different - passing the file through ZF. i can't help you with that, but it should work roughly like this:
in your controller, set the output type to image/png (however ZF handles that) pass through your image and make sure ZF doesn't add anything to the output (like additional html and stuff).
Why not make your View Helper create an image, write it to disk, and then output/return the img tag with the correct source attribute?
Send appropriate headers (content type) and then use http://www.php.net/image_jpeg