MAX_FILE_SIZE, stop upload of files that are too big

[EvilErnie]

Hi there...

Goodness, this could be a Newbie question. I read the question quite a few times, but i never found a good answer. Maybe you somebody here can help.

I got a gallery set up with mySQL and PHP4. I want the users to be able to upload images, but of course i want to limit the filesize. That is no problem AFTER the request is sent - i just read $file_size and print an error message.

But if somebody uploads an image that is - say - 4 MB it gets loaded to the temp folder on the server, THEN i check the file size and exit the process.

When i set MAX_FILE_SIZE to a small value, there will be a quite ugly error message, if the file is bigger.

So, is there a possibility to check the file size, BEFORE the file is sent to the server, or at least catch that error message?

Regards,
EvilErnie

 

[AnakinPt]

To the question you made, i don't know the answer, but i can tell you that you can change the paramters of the php.ini file in runtime, with the function ini_set

ini_set("MAX_FILE_SIZE","10M"

changes the MAX_FILE_SIZE of this script to 10 MB.
Anikin
Hugo Alexandre Dias
Web-Programmer
anikin_jedi@hotmail.com

 

[JimEkleberry]

Here is a trick that can help, but it is most definitely not bulletproof. As Anikin suggested, set the proper parameter in your php.ini file.

Create a form field as such:
<input type=”hidden” name=MAX_FILE_SIZE” value=”1000”>

value is the maximum size in bytes that you want to allow.

Place this field before your <input type=”file”> tag.

I hope that helps.

 

[EvilErnie]

Hi there...

Thanx for the help, but that is not it.

Writing <input type=”hidden” name=MAX_FILE_SIZE” value=”1000”> in front of the input file...-field CREATES the error message i want to get rid of.

The only way right now is to set the MAX_FILE_SIZE to lets say 10 MB, wait for an upload and THEN say on the target page &quot;Well, that file is too big!&quot;. But then the file has already been uploaded to the temp folder on the server - and created traffic.

I am looking for a method, that skips the upload and determines the filesize BEFORE the request is sent.

Can i check the file size of a file on the local computer via PHP? That way, i could take the path, the user enters, have a look at the file size on HIS computer and tell him, whether he is allowed to upload or not.

Any idea,
EvilErnie

 

[AnakinPt]

That way you have to do some Scripting in JS and not in PHP. That's for sure. I would like to help you, but i can't. Sorry.
Anikin
Hugo Alexandre Dias
Web-Programmer
anikin_jedi@hotmail.com