Sebastian wrote:
Each time i try setting MAX_FILE_SIZE in a form and using the upload
error code to check if the file is large it always uploads the entire
file before showing the error that the file is too big.. either the
manual is incorrect or this does not work as every method i've tried
always waits for the file to be uploaded before it errors. eg:
<form enctype="multipart/form-data" method="post">
<input type="hidden" name="MAX_FILE_SIZE" value="1048576" />
<input type="file" name="userfile" size="29" />
<input type="submit" name="submit" value="Upload" />
</form>
switch($_FILES['userfile']['error'])
{
case 1:
$message[] = 'Error #1 - ...';
break;
case 2:
$message[] = 'Error #2 - File is too big';
break;
case 3:
$message[] = 'Error #3 - File was partially uploaded';
break;
}
--snip
-- IF no error then start upload...
--snip
yet it waits for file to upload before error.
I've been using php for serveral years and i cant remember ever
getting this to work like the manual states.
From the manual:
"The MAX_FILE_SIZE hidden field (measured in bytes) must precede the
file input field, and its value is the maximum filesize accepted. This
is an advisory to the browser, PHP also checks it. Fooling this setting
on the browser side is quite easy, so never rely on files with a greater
size being blocked by this feature. The PHP settings for maximum-size,
however, cannot be fooled. This form element should always be used as it
saves users the trouble of waiting for a big file being transferred only
to find that it was too big and the transfer failed."
From my understanding of this paragraph, MAX_FILE_SIZE is checked by
PHP but I dont see how you can infer that PHP is able to do this on the
client. If any client side intervention is to be performed then it
should be done by the browser. If you also look at the upload errors
generated by PHP
(http://uk.php.net/manual/en/features.file-upload.errors.php) you can
see that these can only be generated on the server, and therefore
*after* the file has been posted.
I think it is your browser that you need to be investigating...
HTH,
Mikey
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