$_FILES ... ['error'] == UPLOAD_ERR_INI_SIZE doesn't work?

[Ghodmode]

I want to handle errors in a file upload form. The problem I'm encountering occurs when I try to upload a file that is larger than the post_max_size php.ini directive.

I want to use [tt]$_FILES['fileinputname']['error'] == UPLOAD_ERR_INI_SIZE[/tt] to determine whether or not I should show an error message. When I upload a file that's too large, both [tt]$_POST[/tt] and [tt]$_FILES[/tt] are empty.

I get the following error in my server's error log:

PHP Warning:  POST Content-Length of 10134524 bytes exceeds the limit of 8388608 bytes in Unknown on line 0, referer: [URL unfurl="true"]http://home/script.php[/URL]

How can I properly detect and report this error?

Thank you.


--
-- Ghodmode

Give a man a fish and he'll come back to buy more... Teach a man to fish and you're out of business.

 

[jpadie]

that's because the error message relates to the max POST size rather than the maximum upload file size etc.

you need to change your POST_MAX_SIZE directive in php.ini (or httpd.conf or .htaccess).

you could test for the error if you wanted. but it's very ugly and definitely not recommended. something like this

ini_set('display_errors', 'off'); //you probably need to set this by hand in php.ini
$lE = error_get_last();
if (  !empty($lE) &&  strpos($lE['message'] , 'POST Content-Length' ) !== false){
 die ('Naughty naughty.  you can only upload xxxxx bytes');
}

 

[Ghodmode]

Thanks jpadie. Unfortunately, that didn't work for me.

Errors were already not showing in the page. Although the documentation says that the default value for the php.ini directive "display_errors" is "1", when I use ini_get('display_errors'), it returns null. I was reading the errors in the web server's error log.

error_get_last() returned another, unrelated, error (which I should probably fix anyway).

The only thing that worked for me was to set an arbitrarily large post_max_size in my .htaccess file for the directory containing the script.

I don't like this solution because it has the potential to fail if someone attempts to upload an even larger file. Just in case, I added a GET variable to the form's action to indicate it had been submitted. This was recommended in the documentation:

http://php.net/manual/en/ini.core.php#ini.post-max-size

Of course, this solution also presents its own set of potential problems... What would I do for a web server other than Apache? ... what would I do on a server where the AllowOverrides httpd.conf directive is set to None?

Thank you.

--
-- Ghodmode

Give a man a fish and he'll come back to buy more... Teach a man to fish and you're out of business.

 

[grtammi]

Try this and see if it helps:

foreach($_FILES['filename']['error'] as $key=>$error)
  if ($error == UPLOAD_ERR_INI_SIZE) {
    print "Too big!" ;
  } else {
    // process file
  }
}

Alternatively, try doing a print_r or a var_dump on the $_FILES array and see what you get.



Greg