From:             rudolf at softwares dot ch
Operating system: Windows XP Pro
PHP version:      4.3.9
PHP Bug Type:     Documentation problem
Bug description:  Undefined behavior when uploaded file > post_max_size

Description:
------------
I'm not sure if this is a documentation omission and/or a PHP bug:

I want to limit the size of files that can be uploaded to 8MB. I have set
upload_max_filesize to 8MB and post_max_size to 10MB. memory_limit is not
enabled.

When I upload a 9MB file, then $_FILES['myfile']['error'] is 1, as
documented. When I upload a 14MB file, PHP writes nothing to stdout and
writes the following to syslog:

PHP Warning:  POST Content-Length of 14171720 bytes exceeds the limit of
10485760 bytes in Unknown on line 0

The documentation doesn't say how PHP reacts when it uploads a file larger
than post_max_size, but I would assume that it should not "give up," which
is the behavior I'm experiencing.

Reproduce code:
---------------
<html>
<body>
<?php
        if ( $_POST['but_submit'] ) {
                printf("Got the submit!! error (%d) size (%d)",
                        $_FILES['the_file']['error'],
                        $_FILES['the_file']['size']);
        }

?>
<form method="post" action="fileupload.php"
enctype="multipart/form-data">
<table class="form" border="0" cellpadding="0" cellspacing="0">
<tr>
        <td>File</td>
        <td>
                <input type="file" name="the_file" />
        </td>
</tr>
<tr>
        <td colspan="2">
                <input type="submit" name="but_submit" value="Submit" />
        </td>
</tr>
</table>
</form>
</body>
</html>

Expected result:
----------------
Unknown, since the documentation doesn't describe how PHP responds when
the size of the uploaded file is greater than post_max_size.

Actual result:
--------------
A PHP warning written to syslog, and nothing written to stdout. See
description above.

-- 
Edit bug report at http://bugs.php.net/?id=31775&edit=1
-- 
Try a CVS snapshot (php4):   http://bugs.php.net/fix.php?id=31775&r=trysnapshot4
Try a CVS snapshot (php5.0): 
http://bugs.php.net/fix.php?id=31775&r=trysnapshot50
Try a CVS snapshot (php5.1): 
http://bugs.php.net/fix.php?id=31775&r=trysnapshot51
Fixed in CVS:                http://bugs.php.net/fix.php?id=31775&r=fixedcvs
Fixed in release:            http://bugs.php.net/fix.php?id=31775&r=alreadyfixed
Need backtrace:              http://bugs.php.net/fix.php?id=31775&r=needtrace
Need Reproduce Script:       http://bugs.php.net/fix.php?id=31775&r=needscript
Try newer version:           http://bugs.php.net/fix.php?id=31775&r=oldversion
Not developer issue:         http://bugs.php.net/fix.php?id=31775&r=support
Expected behavior:           http://bugs.php.net/fix.php?id=31775&r=notwrong
Not enough info:             
http://bugs.php.net/fix.php?id=31775&r=notenoughinfo
Submitted twice:             
http://bugs.php.net/fix.php?id=31775&r=submittedtwice
register_globals:            http://bugs.php.net/fix.php?id=31775&r=globals
PHP 3 support discontinued:  http://bugs.php.net/fix.php?id=31775&r=php3
Daylight Savings:            http://bugs.php.net/fix.php?id=31775&r=dst
IIS Stability:               http://bugs.php.net/fix.php?id=31775&r=isapi
Install GNU Sed:             http://bugs.php.net/fix.php?id=31775&r=gnused
Floating point limitations:  http://bugs.php.net/fix.php?id=31775&r=float
No Zend Extensions:          http://bugs.php.net/fix.php?id=31775&r=nozend
MySQL Configuration Error:   http://bugs.php.net/fix.php?id=31775&r=mysqlcfg

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