Restrict image upload file size

Question

currently i have php validation as follows

if ($_FILES["file"]["size"] > 5120) 
{
$_SESSION['error'] = 'Upload FAILED, file is too large !';
header("Location: upload.php");
exit;
}

But this does not seem to stop any large files being uploaded! any help much appreciated!!

I think that the filesize is only checked after the upload. So what might be happening is that the file is uploaded, it's too large, so the user sees the error. But the file is there on the server by that point. — andrewsi
– andrewsi, Commented Oct 3, 2012 at 20:00

Mr. Alien · Accepted Answer · 2012-10-03 20:09:27Z

1

Use this to restrict the upload file size :

$max_size = /* whatever */; //File Size in Bytes

if(filesize($_FILES['userfile']['tmp_name']) > $max_size) {
      die('The file you uploaded is too large.');
    }

edited Oct 3, 2012 at 20:09

answered Oct 3, 2012 at 19:58

Mr. Alien

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6 Comments

ceejayoz Over a year ago

Note: this won't prevent the file from being uploaded. The user still has to wait for the whole thing to transfer, and you incur the bandwidth usage involved.

neeko Over a year ago

thank you for your reply, how would i check the size of the file and prevent it being uploaded?

Mr. Alien Over a year ago

@ceejayoz Adding it as a additional info to my answer, permission please :)

Mr. Alien Over a year ago

@neeko use javascript...stackoverflow.com/questions/7133870/…

neeko Over a year ago

@Mr.Alien how do i implement the javascript?

|

Philip Whitehouse · Accepted Answer · 2012-10-03 19:59:44Z

0

Use upload_max_filesize

Entry can be set in php.ini, .htaccess, httpd.conf or .user.ini

http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize

answered Oct 3, 2012 at 19:59

Philip Whitehouse

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