Help With File Upload Form...

otto_co

First of all, I am a complete novice with php. Through search, I found a file upload form and upload handler. The form is html, and the handler is php. This is to be used to allow a user on my website to upload an image file. I have got everything working, including some embeded javascript alert() popups on file errors, with the exception of a blank page coming up during the actual Upload process if there is any kind of file error (file size too large, not an image file). When a proper file is uploaded, everything is fine as far as staying on the original web page that started the process. If there is an error, a blank page is displayed and the only way back to the original web page is to use the "back" button on the browser.

What I would like is to be able to have my original web page still displayed after the user presses the "upload" button, and only have the alert popup come up on that page. How can I do this? I have tried searching for this solution for days now, with no luck. I've tried various solutions to no avail. Any help would be appreciated.

Please be gentle, I am not a php programmer.

Thanks,
Otto...

dalecosp

The default behavior for most PHP installations is to display a blank screen in the event of a fatal PHP error. It is likely that some conditional statement that is only run in the event of a failed upload contains a "parse error" and thus shows no output.

Checking the server's error logs should provide valuable evidence.

If this is not the case, then perhaps the handler script is written this way?

In either event, all anyone here can do is guess until such time as you present the code for analysis.

Good luck, and welcome to PHPBuilder Forums!

[edit]That really should read "some conditional statement that is only run in the event of a failed upload encounters an error considered fatal and thus shows no output". If it were truly a parse error, you wouldn't have any output from the script regardless of conditions....[/edit]

otto_co

Thank you for your reply. I'll admit I don't really understand the answer, however here is the code. Remember, this is from a lot of trial and error trying to get this to work so it's certainly neither elegant or well written. The javascript popups work with all situations, believe it or not. 🙂

Anything that can prevent the blank screen from displaying would be what I'm looking for.

<?php
if($_FILES[file][size] >= 200000)
{
?>

<script.language=javascript>
<script>

alert('File did not successfully upload. Check the file size. File must be less than 200k in size. Please try another file.')
</script>

<?php
exit();
}
if(!ereg("image",$_FILES['file']['type']))
{

?>

<script.language=javascript>
<script>

alert('File is not a picture. Please try another file.')
</script>

<?php
exit();
}
copy ($FILES[file][tmp_name], "/home/american/www/www/uploads/" .$FILES[file][name])
or die("Could not copy file");
?>

<script.language=javascript>
<script>

alert('File upload succeeded...')
</script>

Thanks again for your willingness to help someone who doesn't have a clue.

Otto...

dalecosp

Well, since you are using JS anyway...

... try adding, in your JS sections, after the alert(), the following (assuming your form is called 'upload.html'):

window.location=form.html

🙂

otto_co

Thanks for the response Dale. Again, I'm truely a novice when it comes to coding any kind of scripting. I also failed to identify that I'm on XP Home and FrontPage 2003.

I have a series of individual product pages that each "call" the file upload routine to upload an associated image with that particular product. Here is the file upload form code from the html (FrontPage) web page:

Upload Your Picture Here:</font></b><form action="uploader_save4.php" method="post"
enctype="multipart/form-data">
<input type="hidden" name="MAX_FILE_SIZE" value="600000">
<input type="file" name="file" size="35">
<p></p><input type="submit" name="Upload" value="Upload Picture">
</form>

I would use the file upload form element in FrontPage 2003, but my web hosting uses Unix servers and doesn't support the "sharepoint" services. The following is the code from the uploader_save4.php php script that I found with a search for a "file upload" routine (with my modifications). I only used the javascript because that was all I could find that might have worked to display the alert. If there is another way without it, I'm willing to abandon the javascript.

<?php
if($_FILES[file][size] >= 200000)
{
?>

<script.language=javascript>
<script>

alert('File did not successfully upload. Check the file size. File must be less than 3mb in size. Please try another file.')
</script>

<?php
exit();
}
if(!ereg("image",$_FILES['file']['type']))
{

?>

<script.language=javascript>
<script>

alert('File is not a picture. Please try another file.')
</script>

<?php
exit();
}
copy ($FILES[file][tmp_name], "/home/american/www/www/uploads/" .$FILES[file][name])
or die("Could not copy file");
?>

<script.language=javascript>
<script>

alert('File upload succeeded...')
</script>

I'm sorry, but I didn't quite understand where the line of code you suggested should go.

Is there another method that would, depending on the result from the above code, allow a variable message that I would like to convey to the user, to popup an alert window on the original product page without leaving that product page? Whew! I hope that makes sense.

Thanks again for the help.

Otto...

dalecosp

Well, "in your JS sections, after the alert()" shouldn't be too difficult, I'd think; but I know that the longer you work on something, the harder it gets to wrap your head around it.

<?php
if($_FILES[file][size] >= 200000)
{
?>

<script.language=javascript>
<script>

alert('File did not successfully upload. Check the file size. File must be less than 3mb in size. Please try another file.')
window.location=whatever_the_name_of_your_form_page_is.html
</script>

<?php
exit();
}
if(!ereg("image",$_FILES['file']['type']))
{

?>

<script.language=javascript>
<script>

alert('File is not a picture. Please try another file.')
window.location=whatever_the_name_of_your_form_page_is.html
</script>

<?php
exit();
}
copy ($_FILES[file][tmp_name], "/home/american/www/www/uploads/" .$_FILES[file][name])
or die("Could not copy file");
?>

<script.language=javascript>
<script>

alert('File upload succeeded...')
</script>

So, that's all I was suggesting. PHP it ain't, but it looked like it might well match the technology you were using.

And I can't necessarily blame your host for not supporting Sharepoint. Heck, even FP support is heck from where I stand, and I wish I didn't have to do it.

As for "Is there another method" ... if the goal is to not leave the product page, then Javascript or some other client-side technology is the answer. PHP would have to load a script page and then either include the original page, or use an HTTP header to redirect you back to the original product page, since it is a server-side technology.