I am getting the following error when I am trying to login to my site on my ISP. This happens regularly and from what I have read so far it seems to be that the session_start(); is filling up the temp file which is not set large enough, please correct me if I am wrong. Is there a way of preventing this from happening in PHP code. Is there a way of flushing the temp file with PHP code to prevent this error.

Warning: Unknown: write failed: No space left on device (28) in Unknown on line 0 Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0

well it says the entire device is full... so ... is it? what does "df" say about the file system you are writing the data to? you've got to try seriously hard to manage to fill up an entire partition from one PHP script... you'd have to be a very very bad programmer to have that happen :-)

Yes the entire device is full and the system administrator at the ISP is forever emptying it but when it is full it stops all sites on the server from working and it is not my code that is causing it. But I am looking information to give to system administrator because they say they don’t know how to fix the problem. any constructive suggestions?

get a new isp... you're not paying for this service i hope.