Don't allow > 2mb images

Question

HI! How do i check if the users are trying to upload bigger than 2mb files? I would like to deny that and put an error message to the user who is trying to do that.

I know it is something like this, but what shall i change the 50000 to to become 2mb?

if ($_FILES['imagefile']['size'] > 50000 )
{
die ("ERROR: Large File Size");
} 

Solution 1

2 MB is 2097152 bytes.

Change the 50000 to 2097152 and you're set.

Solution 2

The 5,000 is the number of byes, so basically you just need to convert 2MB to bytes. 1 MB is 1024 kilobytes, and 1024 bytes is 1 kilobyte. Doing the maths, we get:

2 megabytes = 2 097 152 bytes

Basically, you can calculate this in code form

$maxFileSize = $MB_limit * 1024 * 1024;

And check that the file size does not exceed $maxFileSize.

Comments

[Admin]

Yes i know that, but what to write in the max_upload_size variabel? To fit my suggestions? 2mb? Howto ;)

[Lucas Jones]

2 MB = 2048 kilobytes. 2048KB = 2097152 bytes. (Apparently.)