php://input fails with large files

Question

I'm using a upload script with ajax and PHP and it works wonders for files smaller than 80MB. However, if the file is bigger than 80MB it fails, it doesn't even output anything at all.

The code is:

$maxsize = getMaxFileSize();
$finalfile = $uploadpath . $finalname;
$putdata = fopen("php://input", "r");
$fp = fopen($finalfile, "w");
$filesizecalc = 0;
while ($data = fread($putdata, 1024)) {
    fwrite($fp, $data);
    $filesizecalc = $filesizecalc + 1024;
}

fclose($fp);
fclose($putdata);
if ($filesizecalc <= $maxsize) {
    addFile($_SESSION['userdata']['userid'], $finalname);
    echo "$fn uploaded";
} else {
    unlink($finalfile);
}
exit();

This works fine with almost all files < 80 MB, but for files bigger than 80MB it doesn't output a thing, so I don't even know what's going wrong, even though I set

error_reporting(E_ALL | E_NOTICE);
ini_set('display_errors', 1);
ini_set('memory_limit', '1024M');
ini_set('upload_max_filesize', '1024M');
ini_set('post_max_size', '1024M');
ini_set('max_input_time', 10000);
ini_set('max_execution_time', 10000);

run php_info() after the ini_set. Usually upload_max_filesize can't be set with ini_set — SimSimY
– SimSimY, Commented Apr 22, 2012 at 14:28
You're right, it wasn't set with ini_set. However, it is set at 100M by the host, that should be enough for a 99MB file, right? Also, the max_input_time is set at 60, isn't that to low either? — Rui Gomes
– Rui Gomes, Commented Apr 22, 2012 at 14:40
I would say that uploading 99MB file with 100MB limit is to risky - you should take ~10% extra for headers, control packets and etc. 100MB in 60sec is 1.7mb/s upload speed (13.5Mb upload link). probably it won't be enough — SimSimY
– SimSimY, Commented Apr 22, 2012 at 14:46
My host just increased the upload_max_filesize to 1024 and max_input_time to 3600 and it is still not working. This is very strange :\ — Rui Gomes
– Rui Gomes, Commented Apr 22, 2012 at 14:58

SimSimY · Accepted Answer · 2012-04-22 15:31:35Z

3

Lets write it down as solution so it can be read correctly rather than digging in the comments.

Check your php_info() after the ini_set commands, some config variables cannot be changed from the script there are ~ 6 different values controlling big uploads. Check ALL of them (the list and the explemenations can be found here )
Check in the apache error_log file for the real error. (or check the access_log to see what was the request status returned by the server)
there may be some Application firewall or apache config that limits the request time. In this case you'll see response code such as "connection reset".

Try the W3Scools upload script:

<?php
if (true)
  {
  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
    }
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "<br />";
    echo "Type: " . $_FILES["file"]["type"] . "<br />";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";

    if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "upload/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
      }
    }
  }
else
  {
  echo "Invalid file";
  }
?>

edited Apr 22, 2012 at 15:31

answered Apr 22, 2012 at 15:13

SimSimY

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4 Comments

Rui Gomes Over a year ago

Ok, I've checked everything and it still fails. All config variables are set to huge values, the error_log file is clean and the access_log always shows OK 200. I'm lost here :\

SimSimY Over a year ago

could you upload the last rows of the access log. The last parameter should be the response size. as well you can put few "echo" command and see how far the scrpit gets. BTW, what happens if you upload small file? Try the script I've added.

Rui Gomes Over a year ago

Can I use that script if I'm getting the file within the php://input?

SimSimY Over a year ago

I don't think you'll need to user php input stream for this. anyway is a good way to try to breakdown the problem.

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