File upload returns error even if image size way below upload_max_filesize

Question

When I try to upload an image over about 4mb, then $_FILES['upload']['error'] returns 1 and the file wont upload. But in my php.ini I have upload_max_filesize set to 20mb....

Why am i getting an error?

Heres php code to check for error

if ($_FILES['upload']['error']) {
   array_push($not_uploaded, $_FILES['upload']['name']);
   if ($_FILES['upload']['error'] == 1) {
     trigger_error('Iimage exceeded server php upload limit', E_USER_WARNING);
     array_push($error_msgs, elgg_echo('services:image_mem'));
   } else {
     array_push($error_msgs, elgg_echo('services:unk_error'));
          }
 }

phpinfo(), make suer its the right php.ini file; most systems would have 2 at least (cli, and via Apache) — user557846
– user557846, Commented May 23, 2012 at 23:38
Several other places could be setting that .. a phpinfo(); will tell you what the settings it's using actually are, and where they are being gotten from. — Sp4cecat
– Sp4cecat, Commented May 23, 2012 at 23:40
Do you have the MAX_FILE_SIZE hidden field in the correct place? — Eugen Rieck
– Eugen Rieck, Commented May 23, 2012 at 23:47
I just found that upload_max_filesize is also set in .htaccess and its set to 5242880. This is probably the value used (phpinfo() says upload_max_filesize is 20m). But still, the files im trying to upload are 4.5 and 4.7mb but an error of 1 is still being returned.. — Mark
– Mark, Commented May 24, 2012 at 0:02

Tio · Accepted Answer · 2012-05-24 00:48:16Z

2

You should also check the configuration of the variable post_max_size in the php.ini file.

In PHP docs: Common Pitfalls

If post_max_size is set too small, large files cannot be uploaded. Make sure you set post_max_size large enough.

answered May 24, 2012 at 0:48

Tio

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Eugen Rieck · Accepted Answer · 2012-05-24 00:29:40Z

0

As the php docs say, you need to send a (most often hidden) field with the name MAX_FILE_SIZE before the actual file. While theoretically even 4MB shouldn't work without it, this might be some hardcoded default.

Use the example form of the mentioned PHP docs page as a starting point.

answered May 24, 2012 at 0:29

Eugen Rieck

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4 Comments

Mark Over a year ago

oh I didnt know about MAX_FILE_SIZE, i thought i had to always check file size after its up loaded. This is useful:)

Tio Over a year ago

Actually MAX_FILE_SIZE is only an indication, and most browser's just ignore it, you always have to upload the file to check it's size in PHP.

Eugen Rieck Over a year ago

@Tio MAX_FILE_SIZE is not only for the Browser, it is also sent as a POST variable, and parsed by PHP. This doesn't mean, you can use it to bypass the limits in php.ini

Tio Over a year ago

@EugenRieck, yes, your right, I forgot to mention that the MAX_FILE_SIZE is sent by POST

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