Description:
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I spend the better part of a day trying to find what I'd done wrong to prevent the following feature from working:

"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."

http://www.php.net/manual/en/features.file-upload.post-method.php

From what I found searching online, including this previous bug:

http://bugs.php.net/bug.php?id=40387

it seems this hidden input field does nothing at all to prevent an over sized file from being uploaded.

Unless what I've read is incorrect, my suggestion is to remove the above quoted text from the documentation so that others do not waste their time trying to make it work as stated.

Thank you for all the great work everyone!

Reproduce code:
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<form enctype="multipart/form-data" action="__URL__" method="POST">
    <!-- MAX_FILE_SIZE must precede the file input field -->
    <input type="hidden" name="MAX_FILE_SIZE" value="30000" />
    <!-- Name of input element determines name in $_FILES array -->
    Send this file: <input name="userfile" type="file" />
    <input type="submit" value="Send File" />
</form>

Expected result:
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"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."

Actual result:
--------------
File uploads completely.