refresh

[Stijn Goris]

hi all,

Is there a way to prevent a refresh of a page?
When a user refreshen on a certain page, pictures he already uploaded, will
upload again...

regards
Stijn

[Chip]

Re: refresh

Stijn Goris wrote:[color=blue]
> hi all,
>
> Is there a way to prevent a refresh of a page?
> When a user refreshen on a certain page, pictures he already uploaded, will
> upload again...
>
> regards
> Stijn
>
>[/color]
Do you mean downloaded or uploaded? Downloading is usually handled by
the browser cache settings and images aren't actually downloaded a
second time.

[Shawn Wilson]

Re: refresh

Stijn Goris wrote:[color=blue]
>
> Is there a way to prevent a refresh of a page?
> When a user refreshen on a certain page, pictures he already uploaded, will
> upload again...[/color]

You could do something like this in your form:

<input type="hidden" name="uniqueid" value="<?PHP echo uniqid(); ?>">

And in your handling code, put something like this:

$file = file("logfile.t xt");

//if form has been sent, make the user obtain a new unique id
if (in_array($_POS T['uniqueid'], $file)):
echo 'The form has already been sent. Click <a href="foo.php"> here</a> to
send again.';

else:
//Process your file uploads as you do now.

//write unique id to logfile
if ($logfile = fopen("logfile. txt", "a")) {
fwrite($logfile , $_POST['uniqueid']);
fclose($logfile );
}

endif;

You'd have to periodically clean out the logfile. You could also use a database
table to do this.

Regards,
Shawn
--
Shawn Wilson
shawn@glassgian t.com

http://www.glassgiant.com

[Shawn Wilson]

Re: refresh


Shawn Wilson wrote:[color=blue]
>
> Stijn Goris wrote:[color=green]
> >
> > Is there a way to prevent a refresh of a page?
> > When a user refreshen on a certain page, pictures he already uploaded, will
> > upload again...[/color]
>
> You could do something like this in your form:
>
> <input type="hidden" name="uniqueid" value="<?PHP echo uniqid(); ?>">
>
> And in your handling code, put something like this:
>
> $file = file("logfile.t xt");
>
> //if form has been sent, make the user obtain a new unique id
> if (in_array($_POS T['uniqueid'], $file)):
> echo 'The form has already been sent. Click <a href="foo.php"> here</a> to
> send again.';
>
> else:
> //Process your file uploads as you do now.
>
> //write unique id to logfile
> if ($logfile = fopen("logfile. txt", "a")) {
> fwrite($logfile , $_POST['uniqueid']);
> fclose($logfile );
> }
>
> endif;
>
> You'd have to periodically clean out the logfile. You could also use a database
> table to do this.[/color]

Or, if you prefer an example that has a chance of working, try this line
instead:

fwrite($logfile , $_POST['uniqueid']."\n");

Regards,
Shawn
--
Shawn Wilson
shawn@glassgian t.com

http://www.glassgiant.com

[CountScubula]

Re: refresh

http://www.gzentools.com -- free online php tools
"Stijn Goris" <mepisto@hotmai l.com> wrote in message
news:bdK%b.1524 9$I%5.733312@ph obos.telenet-ops.be...[color=blue]
> hi all,
>
> Is there a way to prevent a refresh of a page?
> When a user refreshen on a certain page, pictures he already uploaded,[/color]
will[color=blue]
> upload again...
>
> regards
> Stijn
>
>[/color]

I take it at the moment you have 2 parts, 1-an upload form, 2-upload
script/page, change this to 3 parts,
1-upload form, 2-upload script, 3-page.
At the end of you upload script, redirtect to the destination page with this

<?php
// code to handle file upload

header("Locatio n: http://www.yourdomain. com/nextpage.php");
?>

then if they refresh next page, it will not upload again.

--
Mike Bradley