Filesize() problems

[panas]

I have made a php chat webpage with some javascript. I don't use a database to store the messages. Instead I use a text file.
I am trying to make the page to refrseh automaticaly when a new message is sent from a user. So I made an interval of 3 secs for the page and every 3 secs I am using the filesize(chat.txt) to check if the size of the file has changed (so I can refresh the page to show the new messages). The problem is that the filesize command always returns the same file size even if someone has send a new message. the filesize is corect only when I refresh the page.
Thank you in advance!

[panas]

I believe that my problem has to do with the caching of the file.
I have tried clearstatcache() but nothing happens. Do I have to use the filesize only in the serverside to have the correct size of the file?
If you need my code just tell me so.
Thank you

[rehfeld]

Do I have to use the filesize only in the serverside to have the correct size of the file?

how else would it be possible?

post your code

[panas]

The problem was that I was trying to use the filesize command after the page has loaded.
Thanks for the reply