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I've created an upload script in php that takes a file, resizes it, and creates a cropped square thumbnail. The script itself seems to work fine.
However, when I tried to upload an image through Firefox, on clicking the submit button the browser shows the loading animation, but it never calls the script, it just stays on the current page. If don’t upload an image, then the script can be found and is run.
I tried in safari, and I don’t get the same problem, I can upload an image from the form, it will process it and take me the correct page.
I’ve tired just calling a basic script from the form, it just prints out the $_POST and $_FILES, and I get the same result, if an image is present, it won’t get to the script, if no image is present, it runs fine.
I’m just wondering if anyone has any idea what’s going on?
=Update=
Okay, so I’ve still got this problem, I seem to think I’ve found out what’s causing it then, but then I find something that contradicts it completely.
At the moment, I’ve noticed that I can successfully upload after I clear my Firefox cache, but I can only upload one image, then when I try to upload another, I can’t, it just resets the connection after "Loading..." for a bit.
Also, I’ve noticed that I can Ctrl+F5 a few times and get another upload through.
Although there are ways around this, I don’t want to have a form that requires users to clear cookies or refresh every time they need to upload. And as I’ve mentioned before, this error does not occur in IE/Opera/Safari/Chrome.
It seems like Firefox is storing something, I’m not sure what. Any help would be gratefully appreciated.
If it helps here is the code I’m using.
The HTML Form
<form enctype="multipart/form-data" action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="POST">
<label for="file">Choose a file to upload</label>
<input id="file" name="file" type="file" /><br />
<input type="submit" value="Upload File" name="submit" />
And the PHP:
if (isset($_POST['submit'])) {
echo "Processing...<br/>";
if (isset($_FILES['file']['name'])) {
$file_array = $_FILES['file'];
echo "Uploading...";
upload File($file_array);
echo "...Done";
}
}
The echos are for me to see what’s going on. If none of them are actually being output. So for some reason the form is not being submitted. Which is why it’s not getting to the script. I’ve no idea why though. I’ve got no CSS, or JavaScript errors.
== Update ==
Okay I’ve being trying some more things and still no luck, the HTML, CSS and JavaScript is all valid. I’ve done an IIS Reset, I’ve recreated my Firefox profile. And still now luck.
I was testing it again, and this time I stopped it in the middle of loading (before the connection was reset) and then tried to go to a different page of the website, and the freezing continued, it would still say "Loading..." and "Waiting for localhost...". Not really sure what to make of that, is it some settings that I have? But then why doesn’t it affect other browsers?
== Update ==
As I mentioned below, it seems that AVG Linkscanner/Active surf shield seems to causing this issue, and there are many reports of others having similar problems with it. I updated from AVG Free v9.0.733 to v9.0.790 and I STILL have the same problem. I’m going to browse the AVG support forums and maybe post something over there since it seems to be an AVG issue.
If anyone does have any more insight, please post below. It’s much appreciated :)
Okay, im getting somewhere with this, you may think this is just a stupid mistake but read on.
If i dont have the < html >< body >..etc tags and just have..
Then i get this issue, where firefox will hang, on form submission.
If i have the correct tags like..
Then it seems that this works. Now this looks simple, but i build my pages up dynamically so i just have one file that contains just the form code that gets included in the page.
Thats as far as ive got, althought having the form code in a separate file should make no difference since its all put together server side.