undefined behaviour file upload large size

manzoor

Hey when I upload a file which is greater than post_max_size, i get notices of undefined variables and my program doesn't seems to work. I validate files both in the MAX_FILE_SIZE value in HTML FORM and in PHP. That validation only works if the file is less than post_max_size....What can be the solution for this? If I increase the size of post_max_size to a greater number everything works fine...but I don't know much do I increase it. Even if I increaase it to a greater size, i still can't be sure that the user won't upload a file greater than the increased post_max_size.......

bradgrafelman

You should define a max value in a variable (or constant, whatever your preference is) inside your script, that way you don't rely on what the user sends you.

Then, simply check if the file uploaded failed due to errors (see: [man]features.file-upload.errors[/man]) OR if the file uploaded is still greater than your defined max size. If so, display an error message; if not, continue processing the file upload.

Beyond general advice like the above, you'll have to show us your code if you can't figure it out.

manzoor

The validation I do is fine and is the same as you have suggested in the above post and it works fine. But my problem is that when the file is greater than the post_max_size in php.ini an undefined behavior occurs which I sort of cannot explain but here is what another user have asked and that's exactly my problem.

http://bugs.php.net/bug.php?id=31775

bradgrafelman

In that case, I suppose the only thing you can do is what was suggested; add a parameter to the query string in the form's action URL. When processing uploads, check if the parameter in the URL is set and that the $POST and/or $FILES arrays are empty; if so, then the likely error is that the upload exceeded the post_max_size and you can handle that problem accordingly.