[Resolved] FileSize Check B4 Upload

drag0n

One of the worst drawbacks of fileuploading is how the code can only check the file size after it uploads the file to the server and then it tells you whether it is too big or not, and that is one of the most complaints I get from clients, anyone know how I can fix this so it can check the filesize(maybe from the users computer first) before it attempts to upload it to the servers mem?
Thanks

LordShryku

Only suggestion I could give would be to use the hidden field value max_file_size

<input type="hidden" name="MAX_FILE_SIZE" value="2000000">

Putting that in there with the proper enctype(enctype="multipart/form-data") in your form tag hints to the browser that files should not be above this size. The value is calculated in bytes.

Beyond that, you'd need to look into javascript.

drag0n

with that hidden form value, would it "precheck" it?

LordShryku

It should, but like any client side app, it can easily be bypassed

drag0n

Yah, so I should have double checking and if they try to be smart and upload a 700mb file, they waste their time and my script can still stop them after they wasted all that time and stop it right?

LordShryku

Right. Regardless of what front end checking you have in there, someone can get around it. And it sucks to have someone do that and waste bandwidth uploading some gargantuan file, but at the back end, just check it's filesize once uploaded, delete it if it's too big, and punish the person who did it in which way you see fit.

drag0n

thanks